Up for sale is a vintage Altaïr Watch Co. This is a Swiss-made, 17-jewel movement stamped “UNADJUSTED, ” with “ALTAÏR WATCH” and “SEVENTEEN” jewels engraved across the plate, and “17 JEWELS” and “SWISS” stamped along the edge. Two ruby jewels are visible near the balance assembly, with additional jewels in the gear train. The balance…