Vintage LINKING KEYS PUZZLE Cast Iron c.1940's - ref.k893

Vintage linking keys puzzle

Examples are known from the late 1800's and modern ones are now made of plastic or alloy
This is a cast iron example dating to the 1940's

No instructions, however there are lots of websites and Youtube videos showing the solution

An interesting addition to a key (or magic) collection

This will be sent UNLINKED so that it lays flat in the package

Approximately:
48.2mm & 55.6mm in length keys
23.7g in weight

General usage wear, knocks, dings, scrapes and marks
Tumbled in walnut shell to remove all rust and grime
Clean - No rust

Several hundred more keys and padlocks are available in my eBay shop