1950s Rolex jubilee bracelet end link suspicion.

[TrivagoXSupreme]

I had a problem with a 1950s Rolex oyster perpetual winding mechanism a few days ago. I had taken it to a shop in Brookline, MA to get a quote and when he gave me a price of 480 I told him I would like the watch back and I would take it to my other watch guy who originally did the work due to the high price. This guy had taken my watch in the back to put the band back on and came back with it and told me to get the hell out of his story. I believe he was so rude to me after because he took the end links off and replaced it with a different one afterwards and hoped I didn’t notice. Attached is a picture of the watch but for some reason I don’t trust this guy due to the fact that on the back of the watch you can now see the connecting pins that I CANT recall. I do in fact recognize the “49” number on it but could this guy have taken the end link off and swapped it. My watch was all original and now I think it’s been compromised. Tell me what you guys think. What would be the benefit of him swapping it out ? Is that a thing somebody would do ? It just looks off to me but what do you guys think. My point is I have never recognized the “v cuts” that expose the pin underneath at the end link. The “#49” on it is the same number as I remember but boy does this feel off. What do you guys think?

Serial number - 154 83 83
Model - 10 02