SOE Coin Slasher
The SOE/OSS Coin Slasher was a covert knife used for slashing tyres. It was made from a coin with a folding blade riveted to it. It could be concealed and mistaken as pocket change if the agent was frisked.
Coin Slashers came with a kit supplied to SOE/OSS instructors by Alcock and Pierce (A&P) stored in a chamois knife-roll that came with a small nail/3 sided bodkin, wrist dagger, Lapel dagger, Thumb dagger, ring tire slasher.