BSG.BS.01378 — M in Square Seal

Found in Gloucestershire, 11.9mm.

Letter M or gates? in a square border // same design repeated

A curious design that could be interpreted as a letter, M or Y, or shutters as in a door or windows or even a book?

The rusted wire attachments suggest a security seal like those used on utilities seals.

No product, company or organisation has yet been associated with this seal. All suggestions welcomed.