Once In A Lifetime Find KT88's From 1956 & 57

Posted by thisword@hotmail.com (A) on February 17, 2017 at 17:37:49

The KT88 first came out in 1956 so according to the date code on the Bakelite pair they are from November ML 4 and December 1956 MM 4. So these are first production (1st generation). Anybody know what month they began production and coding?
The second pair are 2nd generation KT88s same glass as generation 1 but with metal bases Date codes put them at March 57 NC 4 and December 57 NL 4

These were purchased back in the 1960's by an engineer (now retired 78 years young) They were put into a storage box and forgot about. About a month ago I was introduced to him and I have these wonderful tubes now.

They appear to be NOS NIB. The boxes are crisp and clean, the inner envelopes are present and the Logo's on the tubes are primo. Testing as new on my tester.

Trying to research these first generation KT88's is almost futile. There is no information out there anywhere. What gets me more is that when you go to google images not one picture of these original style glass come up.
Are these tubes really that rare?

Nothing is coming up on ebay present or past.

Maybe they should be in a museum

and what would be a real market value. Hard to put a price on something that you never see for sale let alone ever see!

Thoughts comments anyone?

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Topic - Once In A Lifetime Find KT88's From 1956 & 57 - thisword@hotmail.com 17:37:49 02/17/17 (20)

RE: Once In A Lifetime Find KT88's From 1956 & 57 - Nunki 02:01:51 03/20/17 (0)

OMG,these are the real McCoy - Michael Samra 10:43:27 02/19/17 (3)

RE: OMG,these are the real McCoy - thisword@hotmail.com 20:45:15 03/19/17 (0)

RE: OMG,these are the real McCoy - Eli Duttman 13:05:57 02/19/17 (1)

RE: OMG,these are the real McCoy - Michael Samra 20:45:57 02/21/17 (0)

Truly ! A Once In A Lifetime Find KT88's From 1956 & 57 - Interstage Tranny 17:15:30 02/18/17 (0)

RE: Once In A Lifetime Find KT88's From 1956 & 57 - baileyler 07:35:56 02/18/17 (3)

RE: Once In A Lifetime Find KT88's From 1956 & 57 - thisword@hotmail.com 07:52:19 02/18/17 (2)

Some more beauties from 1956 - XLR8OR 22:01:51 03/19/17 (0)

RE: Once In A Lifetime Find KT88's From 1956 & 57 - Eli Duttman 13:10:51 02/19/17 (0)

Well- If you want to sell.... - Ross 19:25:44 02/17/17 (0)

RE: Once In A Lifetime Find KT88's From 1956 & 57 - zacster 18:43:21 02/17/17 (0)

RE: Once In A Lifetime Find KT88's From 1956 & 57 - Eli Duttman 18:04:47 02/17/17 (3)

RE: They'd sure sound good in my Soloist 88s you helped design! - kitch29 05:03:30 02/21/17 (0)

RE: Once In A Lifetime Find KT88's From 1956 & 57 - Cleantimestream 12:18:25 02/18/17 (0)

RE: Once In A Lifetime Find KT88's From 1956 & 57 - thisword@hotmail.com 18:18:15 02/17/17 (0)

Freedom costs a buck o' five - Chip647 18:04:37 02/17/17 (3)

RE: Freedom costs a buck o' five - thisword@hotmail.com 18:14:00 02/17/17 (2)

You did not mention that you paid him for the tubes. - Chip647 08:18:08 02/18/17 (1)

RE: You did not mention that you paid him for the tubes. - thisword@hotmail.com 08:29:03 02/18/17 (0)

Once In A Lifetime Find KT88's From 1956 & 57

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