I have recently acquired some vintage GP watches. I was searching this site yesterday - which I find very informative, thanks, (From reading the posts on this site it seems that I dont have any special models but those I do have give me pleasure and keep good time) - whilst trying to find out more about the Gyromatic movements in my watches, both 17J (x3) and 39J(x2) models I came across the page detailing the dates of movements and giving photographs. I thought I had saved that page as one of my favourites but no, I have just spent another couple of hours searching and cannot find it. Please can you give me the link to that informative page? Many thanks