Where can I buy old coins in Jerusalem?

In a month or so, I will be traveling to Jerusalem and will have the chance to also go to Nazareth and Bethlehem. Unfortunately I won’t be staying in Tel aviv.

Does anyone know where I can get old coins from that area (EX. British Mandate coins or one of the Islamic Caliphates coins, Crusaders, Roman and basically anything ancient. )

If it requires me to go to the Eastern side of Jerusalem, There is no problem in that, It will be easy crossing over there.

Thanks for reading :)