With a hammer, ;)
1950s- 60s
50 or so
You will need to see a gunsmith.
10-40 USD
The PIN isn't on the card.
It will probably cost you more to find one and have it installed than the piece is worth. They were made on the low side of quality to begin with.
No published sn data. 20-60
20-60 USD or so
20-80 USD or so
that pin is expired...
Find a good gunsmith or machinist