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Description
ECC83 12AX7 EI Yugoslavia Telefunken Long Smooth Plates 17mm Matched Pair NOSCountry of Manufacture: Yugoslavia MPN: 12AX7ECC83 Brand: EI Type: Vacuum Tube Model: 12AX7 ECC83 Auction is for two (2) fully tested NOS tubes, platinum matched pair of rare ECC83 12AX7 EI made in Yugoslavia on geniuine Telefunken made tooling machines. Please pay attention that they DO NOT HAVE ANY PRINTS! They are real vintage NOS tubes in original boxes made back in late 80s early 90s in EI tube factory in Nis, Serbia. (Elektronska Industrija Nis)
Country of Manufacture: Yugoslavia
MPN: 12AX7ECC83
Brand: EI
Type: Vacuum Tube
Model: 12AX7 / ECC83
Auction is for two (2) fully tested NOS tubes, platinum matched pair of rare ECC83 12AX7 EI made in Yugoslavia on geniuine Telefunken made tooling machines. Please pay attention that they DO NOT HAVE ANY PRINTS!
They are real vintage NOS tubes in original boxes made back in late 80s - early 90s in EI tube factory in Nis, Serbia. (Elektronska Industrija Nis)
If you like sound of Telefunken's smooth plates ECC83 12AX7, you'll like these too, because they are (almost) exact copy. The only differences are in thickness of halo getter and in "staples" which are facing each other.
I have few 100 pcs boxes of these tubes and I had enough time last few months to carefully measure them on my Metrix and Tesla tube testers for plate currents and Hickok for transconductance and to make platinum matched pairs with balanced triode sections.
You can find them rebranded Telefunken, Philips and Siemens, because all three factories had contracts with EI. These are pre war tubes, with exceptional quality, made with 1st class materials, because of that many of them have been rebranded like long life premium versions E83CC and sold by Siemens and Philips in their boxes.
You can also find them relabeled Telefunken with diamond mark on the bottom last few years! Diamond bottom mark is done on laser machine, and if you want to avoid that and to be sure that you are buying genuine Telefunken ECC83 12AX7, just take a look at getter and how staples are faced. Diamond bottom is not proof any more ...
If you want to know more about Telefunken ECC83 12AX7 and different types of smooth plate and ribbed plate versions you should read this article on my site: www.tubes.rs/ecc83-telefunken-12ax7/
I collect tubes and tube gear for more then 35 years and I start to sell recently, please be sure to check my other items and visit my store for more rare NOS tubes and parts.
If you buy any item on ebay from me and for if you are not fully satisfied for any reason or have any complains, please send me message before leaving negative or neutral feedback or opening a case. I really do care about your satisfaction and I’ll do my best to solve any kind of problem.
I have more than 250000 NOS tubes in stock and just small part is listed here, if you are interested in any specific tube or part, please send me message.
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4.8 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Great product
Flavor Name: Peanut Butter, Size: Large
My dog loves this toy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
★★★★★ 4
This is gonna be long, so bear with me.
Flavor Name: Peanut Butter, Size: Large
First of all, I didn't receive the pictured item. I got the "Large" sized barbell chew, and the one pictured is the "mega monster" chew.
This review is for the "mega monster" chew which is what's pictured. I have an 80 pound, 1-year-old lab, and this has actually helped her calm her chewing anxieties. She's become less destructive, and a lot more calmer. She even listens now that her hyper-ness has dwindled down.
The chew I got was the one with the golden retriever- which is the large size. It's the exact same thing and the size I'm reviewing (the one that's pictured with the lab). The one with the 'golden retiever' is recommended for sizes 25-50 pounds. The one I needed (the one that is pictured) is for dogs 50 pounds and up, so it's perfect for my lab. (Are you with me still?)
Anyway, I didn't wanna go through the 'returning and waiting for my new product' process, and I didn't wanna risk getting the same wrong product again. So I just took it to my local pet store and exchanged it for what I wanted in the first place when I ordered this, and paid the difference, which was like 3 bucks.
SO, overall this the quality of this item is amazing! My lab is a strong chewer, and she's entertained herself with this product for long periods of time leaving barely a dent in it. I highly recommend it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2015
★★★★★ 5
DIEGO LOVES THIS CHEW TOY
Flavor Name: Peanut Butter, Size: Large
NYLABONE DURA CHEW BARBELL - PEANUT BUTTER FLAVOR
Diego is soon to be two years old and loves to play with his toys and chew on NYLABONEs. NYLABONE is the ONLY bone we will let him have.
NYLABONE brand is long lasting. This BARBELL bone has plenty of little nubs for him to clean his teeth on. He loves to carry it around and play with it also. This particular NYLABONE is made for the extreme chewer and that would be little Diego.
NYLABONE products are veterinarian recommended. They are made in the USA. They are high quality. These NYLABONE products keep him happy, entertain him, and help keep his teeth clean. There no toxins involved the manufacture of NYLABONE products. Dogs naturally want to chew, so let yours chew -- on NYLABONE.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2019
★★★★★ 5
Excellent
Flavor Name: Peanut Butter, Size: Medium
I will purchase this again and again as long as it is made in the USA. I have bought this specific toy 3 times for one of my dogs. He still has all three of them. They are durable, long lasting and are not dangerous like some toys are if they start to come apart or after they’ve been chewed on for a while. With these chew toys, you can tell they’ve been chewed on but they don’t fall apart or come apart in large chunks. I watch my dogs with their toys and have had to take away other toys, even from Nylabone, because large pieces will come off or they will get too sharp where they’ve been chewed. Not this one. I’ll keep buying this one as long as it is USA-made. My dog has not damaged his teeth on this toy. I do get the wolf size which is good for dogs up to 50 pounds and he is 66 pounds.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2020
★★★★★ 3
Some dogs will probably love this.
Flavor Name: Peanut Butter, Size: Medium
My dogs were not very excited about this bone. I don’t think they are particularly picky, so I’m not sure why.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 20, 2026
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