On 23 Mar 2006 06:15:40 -0800, "Gretsch_lover"
wrote:

I would like to know how old are my output transformers.
One is "Stancor A-3823". Another is "Thordarson 24S33".

I have figured out that "Stancor A-3823" continued from early 60's
to 70's.

The A-3823 was in production much longer than that. It was in Catalog
140C, dated 10-Jul-1941.

I haven't yet been able to pin down the Thordarson part.

Dale H. Cook, Chief Engineer, Centennial Broadcasting,
Roanoke/Lynchburg, VA - WZZI / WZZU / WLNI / WLEQ
http://members.cox.net/dalehcook/starcity.shtml