That's a very rare reference and I suspect that's why its getting some serious interest. Most of the -68 cases are the 145.022-68 with the c.861, (also a rare ref. and well worth collecting.)
Most commonly I have seen the 145.012-67 with a movement serial number in the 26...... or 27......range, so its slightly unusual that this is earlier at 25......, but then again its close enough.
As has been noted, the case is really clean, so you suspect a polish, but it still has crisp edges so its either very well done, very light or original.
Nice to have the original bezel in good condition.
If you can afford it I'd say go for it, although I think you could find a 145.012-67 for less, but that's not your birth year! You could also find a 145.022-68 for less if you don't mind having the cal.861.
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