The M31 gallery of... Japan tube portables

Koyo KR-451 "Parrot"

A four-tube radio, this is one of those rare Japanese SUBMINIATURE tube pocket sets, using the same sort of subminiature tubes as Emerson's 747 and Automatic's Tom Thumb 528, and so on and so forth... and it's also the smallest Japanese tube radio I've come across: 5" x 3 1/4" x 1 1/2"! I'm guessing its mfr date to be mid-'50s...

2007 by Robert Davidson,

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Koyo Parrot Sterling LS-4 Crown 530 Carlton Copit 200 Star-Lite RN-7 Hadson Excel T211 International Sterling / Crown Hilton 2 Harpers