Wow, and i thought i could be a bit anal over detailing
imo and fwiw, i doubt the dial is a specific factory spec change, They use more than one supplier for things like dials and they may simply have changed sources for a batch and the 'black' shade is slightly different. I once owned two 232's and the dials were a noticably different shade of brown and only within a few 000's of each other in number. As to the polished edges of the case back, given it's what, 1mm tall? i would live with that or just have the existing one brushed out.
To lose money on the first purchase, knowing i would then lose money on it's replacement i don't regard as desirable