I also have a Teeco 610-D amp, and have been unable to find any documentation on it. Mine uses 12AX7 tubes instead of the 6SC7 and 6SL7's. About all I can add is that is marked "Hi-Fi" on the front panel and "Los Angeles, Calif." on the rear name plate.
Meade
:Mid-50's to early 60's Teeco 610D. Nice little mono audio unit, 6V6x2, 6sl7, 6sc7, 5Y3...anybody have a schematic on this one, or any info on it? Searched high and low for a schematic for it and have yet to find a schemo, or for that matter ANY info on it, at all. Thanks in advance!