Another conservation success

spyglassdesign

I decided to crack out an MS63FH Standing Liberty Quarter, as it had some gruesome looking black spots on it. While it didn't remove EVERY spot (I didn't dare keep dipping it), it removed enough that PCGS upgraded the coin from MS63FH to MS64FH.

YMMV of course, buyer beware. EZ Est is VERY potent!

Mr_Spud

Interesting 🤔

bsshog40

I think it does look better. And you're right, it don't take long for ez zest to start taking away luster. Haven't used it in awhile, but when I did, it was in 3 second increments. Very potent!

ricko

@spyglassdesign ... Very nice work and congratulations on the upgrade. Cheers, RickO

291fifth

But will the spots return over time?

spyglassdesign

@291fifth said:
But will the spots return over time?

I don't think so. I also did an acetone bath so if it was organic they should be gone.