[CKLinLA]

Its a great watch to keep and enjoy - all the more special since it has family history. I am a 'brand new'Sub owner myself - and chose a 14060 (no date) partly because of its similarity in looks to your watch.

On your Q about whether it is a model 5513 or 5512, you should see the serial number and model number when you remove the bracelet. They are on the casing under the two end-pieces of the bracelet at the 6 and 12 positions.

You can do this yourself. I find that using a sharp wooden toothpick to push in the pins is a good option if you do not have the proper tools (and assuming the pins are not 'stuck' in place due to the watch's age). A wooden tooth pick will assure that you do not add any scratches to the watch if your hand slips.