I know there is little interest in vintage ladies. But I couldn't resist picking this up for a couple dollars. Look at the size of this piece. 25 jewels. And it is keeping near perfect time over 24 hours. 20 micron electroplated. AR movement . Says AR72 under balance, but there may be another number. It doesn't match Ranfft AR672. I assume this is an Enicar in-house movement? And would anyone know an approximate date? I would guess early 50's?