Posted this on the fishing thread. Thought a photo here would find some info. Any ideas who or when made this?
Sheffield Day-Date Diver, the one jewel wonder. Can anyone tell me what the "T Swiss Made AI" either side of the six o'clock marker denotes? I understand "T Swiss Made T" denotes Tritium, but "AI"?
Is it "Al"or "A1"? Better photo please.
Agon 1
Could be like Seiko who write caliber info on the dial, so Agon and 1 jewel ?
Complete guess...