Flashcubes - You slid a lever to spin the flash after EACH picture. 4 flashes on each bulb then that was it, you had to pop in another flash cube. No cube? No flash! I can still remember the smell they made after you flashed one.
Stock Photo : War and Conflict, Post World War Two, Great Britain, pic: April Three London children enjoy the thrill of purchasing lollipops as the Hackney sweetshop well stocked with sweets as rationing becomes a thing of the past