Ulysse Nardin San Marco Classico

I'm looking for some help in identifying a watch I was given after my father recently passed away.We believe the watch was made in 1946, as the serial number at the six o'clock position is listed at "421202," which would indicate that it was manufactured some time between 1946-1947.But there is no model number engraved at the twelve o'clock position. The watch was recently taken to a licensed omega dealer/repair center in Los Angeles who confirmed its authenticity.As you can see in the picture, ........

Just purchased a new Steelfish and would like to remove a few of the bracelet links as it is too large. Each of the links has two screws on the pins at one end. No problem getting the small screw off, but what's next. Do you need a pin punch remover to push the pin out or is there some special Breitling tool for this? Any thoughts would be greatly appreciated. As a last resort, I will return to the AD for sizing as their watchmaker has been off for the last 2 weeks. Silly me, thinking I could ........