The M31 gallery of reverse plastic:

1959 Sony TR-86

4 1/2"H x 2 7/8"W x 1 3/8"D

Sony used reverse-painted plastic on a number of its larger transistor radios, but as far as I can tell this TR-86 is one of only two Sony shirtpockets sold in the US to use reverse-painted plastic on the dial face area. The other set was a horizontal AM/SW shirtpocket, the TR-714.

More notably, the 1959 TR-86 had a smaller production run than did Sony's first commercial export, the historic 1957 TR-63. And while the TR-86 looks as if it were conceived several years earlier than the much smaller and revolutionary TR-610, it actually came onto the market two months AFTER the 610! Sales of the TR-610 dwarfed those of the TR-86 by a ratio of more than 4:1

Sony TR-86 instruction guide...

Sony TR-86 box

shipping box

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2007 by Robert Davidson,

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Hoffman 707 Lafayette 200 Harpers 6TR Kowa KT91 Mitsubishi 300 Crown 670 3 cuties Barlow 180 Crown 555 Standard 210 Toptone 610 Harpers 631 Capehart 203 Voss 6TR Star Lite 6TR Daylite 603 Harpers 900 Aiwa 6TR Crown 86 Seminole 801 Crown 800 Top Notch 6TR NEC 620 Linmark 80 Viscount 103 J-Travis TR8 Crown 666 Mitsubishi 360 Hi-Delity 330 Crestline 280 2 cuties Lafayette 91 2 Cuties
Ditto Global 900s Zephyr 930s Mignon IIA International 2 Standards Nipco Lafayette 253 Mitsubishi 870 Fossil Faux Crown 911 Sharp "Collie" Sony TR-86 3 Sweeties Sanyo and... a nice shtpkt Hitachi 666 Sharp 201 3 nice ones Jaguar 250 Global 711 Wilco ST-88 Sony TR-75 Sony TR-608