Confirm? Not based on pics like those.
Honest sellers, who want to show off the details of their watches, provide good, clear macros. Criminals, rogues & rip-off artists provide pics like these (fuzzy, distant, shaded, etc). Ask the seller to provide a good, clear macro of the dial, movement & numbering between the lugs. Ask for a pic of his original sales receipt (you are likely to get an excuse like 'gift from....' or 'lost' or 'just got a new camera & cannot get good pics out of it').
Always buy the seller BEFORE you buy the watch.