Customs Seal, British, Initialled, AM

Crown, AM Seal, Image by StuE, Found by Goretex.
Found in England, 16mm, 5.8g.

AM on one side and a crown on the other. Remains of rusty wire connections. Possibly a UK Customs seal.

A U.K. customs & excise seal?

See PAS DENO-655F33 for similar crown.