When to use MS70 coin cleaning solution
RobJoyce1921dVAMguy
Posts: 942 ✭✭
Yeah, lots of smart remarks can be said about the title... all the hot buttons... coin cleaning, ms70... I get it!
Seriously, I thought I knew the few instances when MS70 would help, but I didn't improve my defenseless morgan dollar today.
I use it very rarely when there is serious grime on a high-end AU or MS coin that absolutely has to come off. In my experience if you use it on a low-end circ, the coin screams cleaned in my experience. Today I had an AU-58 1921-P VAM that had absolute crud in several small and isolated places. Very obvious and very distracting. Acetone didn't work so I tried to spot clean the crud with MS70. The coin had a golden patina where the gunk didn't hide it... before I tried the MS70. The crud came off but the area near the crud lost its "toning" (was it toning if MS70 took it off?) and went white. I then had to do the whole coin rather than just target the spot I wanted to remove. Guess what? Under the nice patina were nasty hairlines (I definitely didn't inflict them applying the MS70). I now have an almost bright-white, obviously hairlined, screaming cleaned coin. Gosh. Glad this wasn't an irreplaceable VAM, but it was one that would have been a nice specimin if the gunk could have come off without changing any other appearance!
My passion for 1921 VAMs often leads me to coins that have had a very hard life. Lots of stuff with incredibly ugly foreign substances. I do need to remove crud at times so this could be a nice tool at the appropriate time.
When has MS70 worked for you? When has it turned out badly like this experience? Appreciate any education you can pass on!
Rob
Seriously, I thought I knew the few instances when MS70 would help, but I didn't improve my defenseless morgan dollar today.
I use it very rarely when there is serious grime on a high-end AU or MS coin that absolutely has to come off. In my experience if you use it on a low-end circ, the coin screams cleaned in my experience. Today I had an AU-58 1921-P VAM that had absolute crud in several small and isolated places. Very obvious and very distracting. Acetone didn't work so I tried to spot clean the crud with MS70. The coin had a golden patina where the gunk didn't hide it... before I tried the MS70. The crud came off but the area near the crud lost its "toning" (was it toning if MS70 took it off?) and went white. I then had to do the whole coin rather than just target the spot I wanted to remove. Guess what? Under the nice patina were nasty hairlines (I definitely didn't inflict them applying the MS70). I now have an almost bright-white, obviously hairlined, screaming cleaned coin. Gosh. Glad this wasn't an irreplaceable VAM, but it was one that would have been a nice specimin if the gunk could have come off without changing any other appearance!
My passion for 1921 VAMs often leads me to coins that have had a very hard life. Lots of stuff with incredibly ugly foreign substances. I do need to remove crud at times so this could be a nice tool at the appropriate time.
When has MS70 worked for you? When has it turned out badly like this experience? Appreciate any education you can pass on!
Rob
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Millertime
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I've even tried battery acid and it works great on Lincoln cents.
<< <i>I've even tried battery acid and it works great on Lincoln cents. >>
My icon IS my coin. It is a gem 1949 FBL Franklin.
Where the heck do you buy battery acid.
Chris
My Collection of Old Holders
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