The Kodak Six-20 Flash Brownie was made in the USA by Kodak; it was a flash synchronised version of the Kodak Six-20 Brownie Special. It had a sheet-metal body, which could mount a large, unwieldy bulb flashgun. Exposures were 6x9 on 620 film.
Kodak introduced it in December 1940, for a price of $4.25. It was renamed "Brownie Flash Six-20" in 1946, at which time the price went up to $5.90.