This information was provided by a site visitor and also appears in the Disqus section. Thank you Daniel!
This amp is only a VT-40. It has the same amp section as the Ampeg V-2 (the V-2 is an amp head only, this amp is a combo amp).
60w combo tube amp, 7027a power tubes (qty 2), 4 x 10″ CTS speakers (Altec Lansings were optional):
later version has a distortion channel. This version has a 3-position
sensitivity switch. There’s also a 3-position midrange selector switch
(300hz; 1000hz; and 2000hz).