Many aircraft parts are made from unobtainium, in case someone reading this didn't know. Great market there. Planes can't get off the ground without it!
I don't have any great advice for you, but bullion is easier to spend money on - by that I mean its an easier investment/wealth storage/whatever. An ounce is an ounce. If you're uncomfortable holding something that has a numismatic value (or not) then consider getting rid of it so you can have something you are more comfortable.
Titanium is a great metal, completely non-reactive like glass so makes good cookware as long as you are not cooking something that sticks. I got my "Rosen Numismatic Advisory" today, can't wait to read their crystal ball report from the head honchos in the coin industry...
Yeah, but JW, the coins are gold and right now, probably worth maybe $150-$200 over spot. However, for example, gold were to drop by 50%, then the coins would probably be worth $300-$400 over spot. If the person did not already have the gold coins, I would say just buy bullion, but they have the coins already so I say just keep them. Also, by keeping them you save a transaction fee for the time being.
All the more reason not to listen to me!!!! In all seriousness though - if the only reason you have it is for bullion, then sell it, try to make profit and add that profit to your stack. Me - I would keep it and I would look at it (them?) nightly. But I'm comfortable with numismatic gold. If gold drops 50% I'm selling everything I have and I'm going buy everything I can get. In the end, if it were me, I would keep what I (you) have.
Thank you all for the advice and the food for thought. I'm not prone to impulsive moves in this area, so I will wait and watch for a bit to see where things go. Buying some silver in the meantime.