Am I unreasonable - swapping dials/papers

[Horationelson]

Walking through a well-known jewellery district in London at lunch time, I noticed a few interesting watches in the window, including a YM, Datejust and polar Explorer II 16570 (early 90s). I popped in to take a look. I tried on the YM and DJ first, which were nice but not quite what I was after.

When I asked if I could try on the Explorer II from the window, they said white or black? (I hadn’t seen the black one). They went on to say that the white one had no box and papers, but the black one did. I said that my preference was the white. They then said that they could swap the dials for me, so that I’d have a watch with box and papers (!!!???)

For me, saying something like that means there is simply no way I could buy from the place. If they’re offering to swap dials/paperwork within 5 mins of me entering the shop, it does make me question every single item of stock in there. Am I being unreasonable here, or is this reasonably common when buying “vintage” or second hand?