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(1) Sylvania Type 6550 Vacuum Tube (Tested Good on TV-11)

End: 25.09. 2019 23:26:02 on Wednesday

• Condition: Used
• Price: 36.64 EUR
• Status: sold
• Item number: 163879376372
• Counter: 14
• Bids: 1
• Seller: testequip4sale (2542|100.0%)
• Seller information: non commercial
• Item location: Pottstown, Pennsylvania
• Ships to: US
• Shipping: 23,42 EUR
• on EBAY

Sylvania 6550 Vintage Vacuum Tube Pair Gray Plates Tested NOS (Matched 11.3 mA)

End: 20.09. 2019 17:49:28 on Friday

• Condition: Used
• Price: 134.29 EUR
• Status: sold
• Item number: 202782603386
• Counter: 32
• Seller: hamandhifi (17101|99.8%)
• Seller information: Commercial (with base shop)
• Item location: Sparks, Nevada
• Ships to: Worldwide
• Shipping: 17,9 EUR
• on EBAY

Matched Pair of Sylvania 6550 Vacuum Tubes

End: 05.09. 2019 04:01:09 on Thursday

• Condition: New
• Price: 137.09 EUR
• Status: sold
• Item number: 223639981610
• Counter: 52
• Seller: tubetroniks (4486|100.0%)
• Seller information: Commercial (with base shop)
• Item location: Ashland, Oregon
• Ships to: Worldwide
• Shipping: 21,6 EUR
• on EBAY

6550 KT88 Sylvania for Dumont Audio Receiver Guitar Vacuum Tubes

End: 05.09. 2019 03:17:37 on Thursday

• Condition: New
• Price: 57.12 EUR
• Status: sold
• Item number: 143367582704
• Counter: 92
• Bids: 4
• Seller: chukv (11400|99.9%)
• Seller information: Commercial (with base shop)
• Item location: Westwood, Massachusetts
• Ships to: Worldwide
• Shipping: 21,67 EUR
• on EBAY

(8) NOS NIB to 100% Sylvania/Other 6L6GB, 6L6GC + Free 6550 & 7581 Audio Tube

End: 04.09. 2019 17:04:20 on Wednesday

• Condition: New
• Price: 113.8 EUR
• Status: sold
• Item number: 153629396489
• Counter: 29
• Seller: millerstubes (7774|100.0%)
• Seller information: non commercial
• Item location: Salem, Oregon
• Ships to: Worldwide
• Shipping: 46,7 EUR
• on EBAY

SYLVANIA TUNG SOL 6550 TUBE SOLID PLATE 3 HALO GETTER AMPLITREX TESTED

End: 30.08. 2019 19:02:20 on Friday

• Condition: Vom Verkäufer generell überholt
• Price: 63.48 EUR
• Status: sold
• Item number: 113869013743
• Counter: 65
• Seller: bandit35 (7100|100.0%)
• Seller information: Commercial (with base shop)
• Item location: Harmonsburg, Pennsylvania
• Ships to: Worldwide
• Shipping: 21,62 EUR
• on EBAY

6550 Sylvania USA 1 piece imperfect NOS tube valve

End: 27.08. 2019 18:41:16 on Tuesday

• Condition: New: Other
• Price: 66.96 EUR
• Status: sold
• Item number: 173956092448
• Counter: 220
• Seller: billington784961 (2853|100.0%)
• Seller information: Commercial
• Item location: Billingshurst
• Ships to: Americas
• Shipping: 5,5 EUR
• on EBAY

6550 SYLVANIA NOS PAIR VALVE/TUBE (LC83)

End: 20.08. 2019 12:52:06 on Tuesday

• Condition: New
• Price: 140.51 EUR
• Status: sold
• Item number: 264430766494
• Counter: 181
• Seller: yitry (53524|100.0%)
• Seller information: Commercial
• Item location: Billingshurst
• Ships to: Worldwide
• Shipping: 5,0 EUR
• on EBAY

Pair Tung Sol 6550 KT88 Gray Plate Sylvania Branded Vacuum Tube

End: 16.08. 2019 07:40:33 on Friday

• Condition: New: Other
• Price: 248.06 EUR
• Status: sold
• Item number: 264431576926
• Counter: 48
• Seller: jaaelectronics (4941|100.0%)
• Seller information: Commercial (with base shop)
• Item location: Santa Ana, California
• Ships to: US
• Shipping: 27,52 EUR
• on EBAY

2 excellent very strong sylvania welded plate 6550 tubes # 50036

End: 05.08. 2019 04:47:14 on Monday

• Condition: Used
• Price: 90.06 EUR
• Status: sold
• Item number: 264414846337
• Counter: 91
• Bids: 1
• Seller: laurferre_33 (2702|100.0%)
• Seller information: Commercial (with base shop)
• Item location: Belpre, Ohio
• Ships to: US
• Shipping: 22,44 EUR
• on EBAY

Vintage valves vacuum tubes 6550. Sylvania.

End: 04.08. 2019 00:50:53 on Sunday

• Condition: Used
• Price: 44.14 EUR
• Status: sold
• Item number: 163796057437
• Counter: 75
• Seller: ukgolfbidder (105|98.1%)
• Seller information: non commercial
• Item location: Esher
• Ships to: Worldwide
• Shipping: 5,0 EUR
• on EBAY

Vintage pair 1970s Sylvania for RCA triple-getter 6550 Metal Base Power Tubes

End: 03.08. 2019 02:45:04 on Saturday

• Condition: New: Other
• Price: 169.62 EUR
• Status: sold
• Item number: 352689946156
• Counter: 157
• Seller: micrental (10070|99.9%)
• Seller information: Commercial (with base shop)
• Item location: Portland, Oregon
• Ships to: Worldwide
• Shipping: 31,73 EUR
• on EBAY

Matched Quad 6550 Sylvania Power Pentodes - 3 From Same 1976 Batch Test NOS 539C

End: 29.07. 2019 04:14:52 on Monday

• Condition: New
• Price: 150.54 EUR
• Status: sold
• Item number: 293162586916
• Counter: 71
• Bids: 15
• Seller: gotham_analog (931|100.0%)
• Seller information: Commercial (with base shop)
• Item location: Fredericksburg, Virginia
• Ships to: US
• Shipping: 29,37 EUR
• on EBAY

Vintage valves vacuum tubes 6550. Possibly Sylvania

End: 26.07. 2019 14:44:18 on Friday

• Condition: Used
• Price: 17.92 EUR
• Status: sold
• Item number: 193001574239
• Counter: 70
• Bids: 3
• Seller: jraaka (301|100.0%)
• Seller information: non commercial
• Item location: Beverley
• Ships to: GB
• Shipping: 2,9 EUR
• on EBAY

1 excellent welded plate sylvania 6550 tube #40015

End: 21.07. 2019 04:51:05 on Sunday

• Condition: Used
• Price: 44.55 EUR
• Status: sold
• Item number: 264399610117
• Counter: 35
• Bids: 1
• Seller: laurferre_33 (2679|100.0%)
• Seller information: Commercial (with base shop)
• Item location: Belpre, Ohio
• Ships to: US
• Shipping: 15,54 EUR
• on EBAY

SYLVANIA 6550 TRIPLE GETTERS/GRAY PLATES MADE in USA - AT1000 TESTS as NOS KT-88

End: 12.07. 2019 10:06:20 on Friday

• Condition: New
• Price: 37.73 EUR
• Status: sold
• Item number: 264394365226
• Counter: 12
• Seller: nova.76 (1073|100.0%)
• Seller information: Commercial (with base shop)
• Item location: Brunswick, Maryland
• Ships to: Worldwide
• Shipping: 13,86 EUR
• on EBAY

Vintage valves vacuum tubes 6550. Sylvania.

End: 10.07. 2019 15:43:12 on Wednesday

• Condition: Used
• Price: 44.44 EUR
• Status: sold
• Item number: 192982467736
• Counter: 27
• Bids: 1
• Seller: jraaka (299|100.0%)
• Seller information: non commercial
• Item location: Beverley
• Ships to: GB
• Shipping: 2,9 EUR
• on EBAY

Pair of 6550 Power Amp Tubes - Tung sol (One labeled Sylvania) - Good & Strong.

End: 07.07. 2019 17:06:13 on Sunday

• Condition: Used
• Price: 98.32 EUR
• Status: sold
• Item number: 192979048101
• Counter: 29
• Seller: filippie (8805|99.8%)
• Seller information: Commercial (with base shop)
• Item location: Sykesville, Maryland
• Ships to: Worldwide
• Shipping: 21,27 EUR
• on EBAY

2 Vintage Sylvania 6550 KT88 3-Hole Grey Plate OOO Matched Amp Tube Pair

End: 02.07. 2019 04:35:55 on Tuesday

• Condition: New
• Price: 144.38 EUR
• Status: sold
• Item number: 223564664510
• Counter: 245
• Bids: 45
• Seller: gadget-guy (9947|100.0%)
• Seller information: non commercial
• Item location: Seattle, Washington
• Ships to: Worldwide
• Shipping: 20,15 EUR
• on EBAY

1 x 6550 Tung Sol (Sylvania Branded) Vacuum Tube

End: 01.07. 2019 04:50:17 on Monday

• Condition: Used
• Price: 52.69 EUR
• Status: sold
• Item number: 113795029964
• Counter: 77
• Bids: 6
• Seller: no_substitute_for_vacuum_tubes (450|100.0%)
• Seller information: non commercial
• Item location: San Diego, California
• Ships to: US
• Shipping: 18,9 EUR
• on EBAY

(6x) SYLVANIA brand 6550 tubes, used

End: 27.06. 2019 10:00:49 on Thursday

• Condition: New
• Price: 247.88 EUR
• Status: sold
• Item number: 283521937261
• Counter: 114
• Bids: 8
• Seller: jeaustin2 (4029|100.0%)
• Seller information: non commercial
• Item location: Austin, Texas
• Ships to: Worldwide
• Shipping: 14,57 EUR
• on EBAY

Matched Pair 6550 Sylvania Power Pentodes - Same 1976 Batch - Test NOS On 539C

End: 24.06. 2019 02:26:11 on Monday

• Condition: New
• Price: 79.49 EUR
• Status: sold
• Item number: 293125032157
• Counter: 22
• Bids: 1
• Seller: gotham_analog (824|100.0%)
• Seller information: Commercial (with base shop)
• Item location: Fredericksburg, Virginia
• Ships to: Worldwide
• Shipping: 22,35 EUR
• on EBAY

2 Sylvania 6550 Tubes (USA NOS TEST)

End: 12.06. 2019 05:00:17 on Wednesday

• Condition: New
• Price: 101.2 EUR
• Status: sold
• Item number: 283508251905
• Counter: 117
• Bids: 8
• Seller: whip-city-tubes (4277|100.0%)
• Seller information: Commercial (with base shop)
• Item location: Westfield, Massachusetts
• Ships to: Worldwide
• Shipping: 20,21 EUR
• on EBAY

Pair Tung Sol 6550 KT88 Gray Plate Sylvania Branded Vacuum Tube

End: 16.05. 2019 14:29:04 on Thursday

• Condition: Used
• Price: 200.45 EUR
• Status: sold
• Item number: 264324525918
• Counter: 12
• Seller: jaaelectronics (4723|100.0%)
• Seller information: Commercial (with base shop)
• Item location: Santa Ana, California
• Ships to: US
• Shipping: 25,81 EUR
• on EBAY