Turkish, Crescent & Star Customs Seal

Turkish, Crescent & Star Customs Seal, Image & Found by PhilD.
Found in Stamford Bridge area, 21mm.

Crescent and five pointed star // KONTROL / * * / IS(TAN)BUL

The word kontrol suggests this is a Turkish customs seal for Istanbul. See BSG.BS.00267 for a parallel seal and links to others.