I recently purchased this GMT from u/timepiececenter unfortunately. In the pictures you can see clear marks on the cyclops which I asked about prior to payment (I have all our conversation history). He assured that there were absolutely no marks and it was just a smudge. Watch ships and arrives and the marks are still intact. I try to wipe off, wash etc to no resolve. Take the watch to a jeweler and he tells me it's clearly scratched/damaged and can't be wiped off. Would need to be replaced. I go back to u/timepiececenter with this info and he tells me its just a smudge but if I want a new crystal to go for it, then he blocks me on reddit. Extremely dishonest seller who doesn't stand behind his product and company. The jeweler also told me the watch was recently polished ([not mentioned in the listing](https://www.reddit.com/r/Watchexchange/comments/1pbrfrx/wts_rolex_gmt_master_ii_116710ln_2016_12300/)) and there's a bit of dishonesty in the listing given he shows it with a box but ships the watch naked (maybe on me for missing that detail) Either way, I DO NOT advise buying anything from this seller.