A couple questions about 2 pawn shop finds.1917 SLQ & 1892-O Barber quarter.

Stopped by a pawn shop while I was out of town this week and got these 2 coins.
1st question is what would the SLQ grade.A $20 coin.


2nd question.What is this crusty green stuff on the reverse of this 1892-O Barber quarter.I didn't see it till I started photograghing it and it doesn't want to come off with acetone soak.Any ideas on how to remove it?


edited to put coin dates in title.
1st question is what would the SLQ grade.A $20 coin.


2nd question.What is this crusty green stuff on the reverse of this 1892-O Barber quarter.I didn't see it till I started photograghing it and it doesn't want to come off with acetone soak.Any ideas on how to remove it?


edited to put coin dates in title.
Trade $'s
0
Comments
I knew it would happen.
off with a rose or cactus thorn?
Nice pick up by the way.
bob