I refer to your post Vacheron Calibres of 1967. where you written fine about some calibres. I haven't found any pic of Cal. 457, because I have no one, and I can't find any when I look through my books. Probably somewhere in a Antiquorum catalogue but I got about 60 or more of those, or in one of my Sotheby's or Christie's, but you can't search in the catalogues on calibres(!) and you can't or couldn't before either at Antiquorum on the net. What I have is two cal. 435/3B which is a form movement from 40 and 50's, but there were also, rectangular, tonneau, square, rectangular cut, as these, oval and baguette shaped movements. The cal 457 : is a square movement. 19.90 mm x 19.90 mm, 9''', Height 3.30 mm, Breguet spiral, 18.800 vph, 17 jewels, point index regulator, manual winding. The cal 435/3B : is a 'cut' rectangular movement. 17.80 mm x 24.50 mm, 11''', height 3.50 mm, Breguet spiral, 18.800 vph, 18 jewels, point index regulator, manual winding. 1946 1950 - same movement And then I have a round movement cal. 458 : diameter 20.60 mm, 9''', height 3.30, Breguet spiral, 18.800 vph, 17 jewels, point index regulator with 'micro-screw adjuster', what you call a'fine-regulator' or sometimes a 'snail regulator' at the index. So Dean, until I or some one else, runs into a cal. 457 you have to use your imagination, I think it will be a mix of those two. Remember that VC keep their calibers for many years. The 435 they had surely for 15 years! Most of my watches are earlier than these and VC had no cal. numbers at that time. I done my best, and I'll be back as soon as I find anything, now those two are begging me to gout and get some food hej! Doc
that I expected. It's just square and cal. 458 above is round,
and has a more elegant index, but that's all.
Thanks again Alex, it's fantastic for me to "fill up" some more gas Doc