1959 Crown TR-670
Shirt pocket radio, thermoplastic cabinet
4 3/8 x 2 13/16 x 1 3/8 inches / 110 x 71 x 35 mm
Six transistors, superheterodyne circuit
One standard 9-volt battery
Manufactured by Asahi Radio Mfg. Co., Ltd., Tokyo
Distributed by Shriro Trading Corp., New York
In terms of ergonomics and cabinet design, I still think this was Crown's best designed shirt pocket transistor radio.
This unit was assembled on November 30, 1959, as indicated by its mm/dd/yy production date stamp, 301159, which could easily be misinterpreted for a serial number — see my Crown production date codes page.