SPACE ATOMIC GUN - MAKER? - JAPAN

A metallic blue lithographed tinplate angular space gun. Marked ATOMIC GUN with an atomic symbol on the stock. The gun has a single raised rectangular red corrugated plastic spark window on each side. Friction action with spark. Maker? This has the same shape as some Shudo and Ichimura guns.

There is also a silver version with red detailing.

The box has no maker's mark.