1968 P&d Mint Set...

It's a great idea.

The Philly penny will already have carbon spots but stabilizing it will slow their growth a lot. If any of tbhe clad is already mottled in appearance they might be too far gone but about half can be saved. The silver is much iffier as only about a quarter of them can be saved.

I try a quick acetone bath and if this doesn't work then I use a soak in half 91% isopropyl alcohol or denatured alcohol mixed with half acetone. You can't use water so be sure to get 91% if you use isopropyl! A few hours is usually enough but it can take up to three days. The longer they stay in and the wetter the mixture the riskier it is.

Coins that still look OK just need a short soak to get rid of the PVC.

The packaging is inert except for an exceedingly thin layer of plastic inside that was used to promote bonding. Many of these coins have tarnished or corroded including 95% of the Philly pennies. The other 5% still look OK but have tiny growing carbon spots.

Good luck. It sounds like everything will clean up fine except maybe the half dollar and all Three Cents. The nickels tend to still be OK but a little dark. They should be stabilized as well. This is the second worst of all the modern mint sets, the '69 is worst.

I would question their value, outside of their OGP. They are not silver, they have no intrinsic value. With out the mint set packaging, they are just 1968 hole fillers in an album, I would think.

Ah ........ perfect then

And my question is answered ........... nice cladking