Hi, It could be 1960s, but I don't know for sure the only thing we know is its in a photo from 78 of him wearing it so that's the earliest date we have, I might try find the original invoice as he probably kept it.
Hey thanks for that, I might have a go at getting the back off, if I do I will take some photos and see what we get.
My Grandfather was ex UK Royal Navy and moved here (NZ) after the war, so was bought here at some stage...currently only 1 seller of Roamer watches in Auckland, presumably there was more
back in the 60s - 70s.
Thanks for your help, Paul.