BSG.BS.00436 — British Customs and Excise Seal, Imag by PhilD

Found in North Yorks, diameter and weight unknown.

On one side is the British crown and on the other the incomplete phrase CUSTOMS (curved around the top) AND (straight across the middle) EXCISE (straight across the bottom).

The Tudor crown indicates it is from a date before 1953 - Wikipedia.

For duty free UK customs seal see PAS DENO-655F33.