as far as I know it is unique (out of all the 70+ 2499/100s known to the market this is the only to have appeared with this dial) and all watches with close serial numbers as well have different dial types
this patek 2499/100 has a special dial with a "floating" signature and the font style is most probably unique to this watch. One can see the round "g" in geneve which is unique to this 2499/100 watch. This shows how most fo these were made by hand and the...
as far as I know it is unique (out of all the 70+ 2499/100s known to the market this is the only to have appeared with this dial) and all watches with close serial numbers as well have different dial types