Here we have a Sylvania Balanced Black Plate O Getter 12AT7 ECC81 Hickok Tested 3700.3700 Hickok Tested at 3700.3700/4000.4000 This is where 4000.4000/4000.4000 is the average NOS test result for this type of tube. Making this tube well balanced and near NOS in testing. Please see pictures for cosmetic condition Thank you for looking We check our items twice!!! Tested and description written at the time of listing , also once purchased all our items are checked and tested again.Photos shown in this listing are of the actual item for sale.NO STOCK PHOTOS USED unless otherwise stated.Please have a look at the pictures for the cosmetic condition. Please realize when buying antique, vintage or used equipment that they cannot be in an absolute mint or absolute perfect condition, they might need some service, now or later. I take lots of pictures so you can see cosmetics. Use the zoom function and have a good look. It is impossible to describe every scratch, scuff or mark. So take a good look. That is what they are there for. We check and describe the as much of the functionality as we can. If not Fully tested , then items are not tested to the full extent and may have something wrong that I have not discovered. If Fully tested then that is what they are. Fully working. In photographs we occasionally use props to display items in the best light possible. These props, like my white board, lighting ,My Beautiful Wife (she is occasionally caught in the photos), kitchen table, Train track, boxes, my left or right hand are not including unless otherwise stated in the listing. ( Sorry for you having to read this but you would be surprised how many people think the items come with my table or a part of my anatomy and/or my Wifes legs that I have accidentally caught on camera.) Take it from me.... My Wife is not for sale and no amount of money would replace her, though if you offer enough I may include my one of my hands as this would get me out of doing some work. :o) In the first few lines you will see what you are bidding on, i.e... “This auction is for a ?????????? If it does not say base, stand , table , in either the main body of the description or title ... then they are NOT included in the sale. All our items, including changeable parts like bulbs, Vacuum Tubes, circuit boards, internal parts etc. are security marked. If you return an item these security marks are checked before refunds are given. I am sorry for having even to do this , but there are those out there that think it is clever to swap and change parts and return us a faulty item. We have them hidden throughout our items, including internal parts. These are there so we can identify if items have been removed, changed or tampered with when they are returned. VACUUM TUBE TESTING I do not Sell Just Passable Vacuum Tubes. All tubes purchased have loads of life left in them. Low and weak tubes are unceremoniously thrown in the nearest trash can, unless they are collectors Items. When using the word “Matched” it means in test results rather than in cosmetic looks. Whilst I endeavor to put tubes together from the same year and look the same, this is not always the case. I may have the same tube but from differing years matched up in test results, which means they may cosmetically or internally look a little different... The numbers/letters in parentheses are Equivalents put in to help people to find the correct tube. If it does not say MATCHED then please do not consider them to be such. I use a TV7/U military spec Tester which is calibrated . I have 4 of these machines and all display a slightly differing value if I test the same tube, as two testers are never the same. So this shows what I get, and what you get may be slightly different. So all test results are a guide only.I also use a Hickok 752 /800/600 or Amplitrex AT1000 for testing All tubes have passed the Gas and short tests. Rectifiers and Diode tubes do not have Transconductance values. IF YOURE UNHAPPY WITH AN ITEM ...Contact us via messaging.I am human... I make mistakes once in a while. I Run this store on eBay. I am not a huge retail outlet. I try to resolve any issue to both our best interests. MAILING I Try to Mail out within 24 hours of your payment. Where I live the Post office is closed on a Saturday, so Purchases paid for on a Friday will go out on Monday as I work Fridays and do not get home until after the PO is closed. RETURNSI accept returns unless stated otherwise in the description. We insure everything, and we have to pay for this insurance. I also pack well. If you still receive an item that has been damaged please let us know so we can start an insurance claim. Take plenty of pictures and send them to us as this helps alot.I may ask you to return or keep the item whilst the insurance goes though. If I ask you to return it then I will refund you in full once it is returned.. If I ask you to keep the item , then you will be refunded once the insurance goes through.I think it is only fair to ask the carrier responsible for the damage to pay for it. Please be patient enough for this process. DISCLAIMER/WAIVER OF LIABILITY Regardless of the origin of the equipment, documentation provided or identification appearing upon the equipment, the equipment described and offered here is in no way certified for, recommended for, or offered for any specific use. The purchaser agrees that the seller shall not be held responsible or liable for any injuries or damages, whether incidental or consequential, associated in any way with the equipment. The purchaser, by bidding on this equipment, indicates their acknowledgment of, and agreement to the terms of this disclaimer. International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyers responsibility. For more information regarding taxes, etc. for some countries please check you local countries Web site. Most have one. •These charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges.” •We do not mark merchandise values below value or mark items as ‘gifts’ , demos, etc. - US and International government regulations prohibit such behavior. PLEASE DO NOT ASK Please check with your countrys customs office to determine what these Additional costs will be prior to bidding or buying.