Vintage Ei KT90 pair. One tests NOS and one just below. All with the type 2 heavily spot welded plates and silver tab w/black square. Most say that this rare version of the Ei KT-90 is the best sounding. Made in the former Yugoslavia. They have welded gray plates and dual O getters. Shipped in plain white boxes.Tested on a Jackson 648 tester. Results are 100 and 90. 100 and above is NOS. Printing one tube is very good. The other is faint. See photos. $300 for the pair. Price includes all US PayPal fees and USPS Priority shipping to the continental USA. Canadian customers: Please add $40 USD to cover additional shipping and PayPal costs. No matter how secure the packing, the less time 50+ year old tubes spend bumping around in transit, the better they will sound when they reach you. My best experiences sending tubes to Canada in these times have been USPS Priority International shipping. It costs more but your tubes will arrive safely and in a reasonable amount of time. 6-10 days. You will also get $200 USD insurance included in this price. Thank you for your understanding. Questions are welcome.
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