My maternal grand dad had a set of these coffee cups and a Merc outboard for his fishing boat.
Okay, so thanks to Matius, I now know that the above is from Tomy Wind Up Sea Patrol Boat, 1978, and sell on Ebay for over 35 dollars
a couple companies sold these from about 1956 to 1963
Only one firm, K&O Fleetline, had acquired rights to use the engine makers’ names on toy motors. While several other companies made generic knock-offs, the K&O originals are what collectors crave, and are worth about $1,500 — is a K&O drink mixer that looks like an outboard engine, complete with a portable fuel tank that holds its batteries.