some discussion of the topic here: https://omegaforums.net/threads/thoughts-on-refinishing-vintage-bracelets.33231/

for me, cleaning it up is ok as long as it is in keeping with the overall condition of the watch, and done to the original specs.

 

Normally I'd not polish a bracelet to that level, but the -68 looks almost NOS to me. It matches and I like it