What does it mean if my Smiths Empire 'Bullseye' doesn't say made in gt Britain on the face. It's apparently 50s black centre to the dial. 3, 6, 9, 12 are numbered with gold diamonds at the other number points. I've not had the back off yet. Where is the movement likely to be from? There's signs of age on the dial around the numbers do i don't think it's been refinished.