Porta-Bass 15, courtesy of Chris' Guitars, New York.
The Porta-Bass 15 seems to have replaced the previous Fenton-Weill Bass 15 model in late-1963. It still retained the "packaway" amplifier feature of the old model, but its Art Deco styling was more n tune with contemporary amplifier cabinet design. This amp may have inspired somewhat by the Ampeg B15 Portaflex design, which first appeared in 1960.
Two channels with volume and tone controls on each and a Goodmans 12" ceramic-magnet speaker to handle 15 watts. Valves: 3 x ECC83; 2 x 6BW6 (EL84/6V6); 1 x EZ81 Rectifier. Printed circuit boards in the Porta-Bass now replaced the hand-wiring used in the superseded Bass 15 amp.
Fenton Weill advert for the Porta-Bass 15 from February 1965