Tin toy "Boot Robin"
"A pop-pop boat is a toy with a very simple steam engine without moving parts, powered by a candle or oil burner. The name comes from the noise the boats make. Other names are putt-putt boat, crazy boat, flash-steamer, hot-air-boat, pulsating water engine boat. Around the world they may be called Can-Can-boot, Knatterboot, toc-toc, Puf-Puf boat, Poof Poof craft, Phut-Phut, or Pouet-Pouet." (Origin: Wikipedia)
Material: Sheet metal
Size: approx. 14 x 7 x 3 cm (LxWxH)