Oh, it definitely is a Speedy Pro - I believe (it is quite a few years since I last looked at this in detail) we’re looking at a c.861; my display back (c.1863)

Oh, it definitely is a Speedy Pro - I believe (it is quite a few years since I last looked at this in detail) we’re looking at a c.861; my display back (c.1863) Speedmaster is very similar, but I believe there are a couple of minor differences (in addition to the added decoration, given the display back, turning the 861/1861 into an 863/1863) - so, my guess is 861, a somewhat modified Lemania, if memory serves.)