Thanks all for your replies! Yes was thinking of making new holograms but if I can find a mint or someone who can laser engrave the coins, then the cost of dies will not be an issue and individual coin making a possibility...especially if each coin will have the BTC addy engraved on it.
I will think about what you all have suggested and what you have offered and think about this for now.
One question, is it a good idea to engrave the private key? I have heard concerns about x-rays exposing private keys if they are engraved... I realize for long term storage it makes complete sense, but again just weighing the pros and cons.
Not private keys...public keys!
I would not trust the mint with any private keys.
As a coin maker I am the sole person responsible for the keys....and nobody else