Can anyone tell me anything about Grandads watch. It seems to be unusual in that it it has an enamelled case. I have seen cases engraved but not enamelled. Case is Illinois Watch Case Co no 2480631 (2 plates of gold wear for 20 yrs), and the Waltham movement no 18302768.
Thanks for your help. Grandad was born in 1886, so was it a 21st present, or made later, or it might be to celebrate a wedding or job promotion.