Dave Hinson brought this amp to me, back stage before a show in St Louis. After some photos by the bus and a quick analysis here are the details. "The Diana" Custom 410 was made in Torrance, Calif. by Estey Electronics Inc. It has 1 input channel (with high & low gain) preamp'd by half a 12AX7. A "tone" control, mellow-bright switch and vibrato (speed & intensity) control. A 12DW7 handles the vibrato functions. The single 6V6 class-A power section is loud. One Oxford 12" speaker # 12EV-9 (date code: 465-135) and one 3-inch #4613 Tweeter. The Rectifier tube is a 5Y3. Foot-switch jack and a External Speaker jack are provided.
Original list price $119.95
Dimensions: 20.5" long, 10" wide, 16" high, Approx. Wt. 26 lbs.
Serial Number: Not available
Owner: Dave Hinson, Not For Sale
Photo: ©1998 Zack. Used by permission.

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Here is another Custom 410 from Alex Volpe It is the same amp as above (the indoor flash washed out the Brown & Tan). One Oxford 12" speaker # 12K5R-7 (date code: 465-222 on the frame and 25-1009 on the magnet). Power transformer #'s P-50-6201, 606040. Output transformer #6102 (date code: "XX"6-149).
Serial Number: Not available
Owner: Alex Volpe, Not For Sale
Photo: ©1997 Alex Volpe. Used by permission.