| Author |
Replies: 23 / Views: 1,823 |
|
Valued Member
Hong Kong
155 Posts |
|
|
|
|
Bedrock of the Community
United States
62064 Posts |
Edited by coop 09/09/2022 10:30 am
|
|
Valued Member
 Hong Kong
155 Posts |
Thanks for you opinions! Mr Cooper. After brushing the Mintmark's gunk, the mintmark looks seems like the mms-003.  
|
|
Bedrock of the Community
United States
62064 Posts |
|
|
Valued Member
 Hong Kong
155 Posts |
Thanks for your information! Mr Cooper, but I mean the MMS-3, not the RPM-3.
|
|
Valued Member
 Hong Kong
155 Posts |
|
|
Bedrock of the Community
United States
62064 Posts |
Well that one is not the right RPM:  Your coin appears to be a normal mintmark, not a RPM. Note the directions of the punches on the RPMs?
|
|
Valued Member
 Hong Kong
155 Posts |
Very appreciate to let me know lot of RPM knowledge! Mr Cooper.
Edited by chgk1628 09/10/2022 12:39 am
|
|
Valued Member
 Hong Kong
155 Posts |
The last question is the above posting cent MS was not the normal slim style of MMS-004,it's looks like the MMS-003.
Edited by chgk1628 09/09/2022 6:37 pm
|
|
Moderator
 United States
95517 Posts |
Try soaking it in acetone over night and using a soft thorn to remove the gunk in the MM, then have a second look at it.
|
|
Bedrock of the Community
United States
94367 Posts |
Good idea, that might help. Wood toothpick works well.
Edited by Coinfrog 09/09/2022 7:24 pm
|
|
Valued Member
 Hong Kong
155 Posts |
Thanks for your helpful suggestions & opinions!
|
|
Bedrock of the Community
United States
62064 Posts |
Be careful with a toothpick. On the gunk that comes off, sometimes sand is mixed into the gunk. Pushing this with a toothpick can make sand scratches on the fields of the coin. (I've seen this myself on a coin)
|
|
Valued Member
 Hong Kong
155 Posts |
Thanks for your reminding! Mr Cooper.
|
|
Pillar of the Community
Canada
6244 Posts |
I had very nice results with compressed air blow when it is soft.
|
|
Valued Member
 Hong Kong
155 Posts |
I think that's the another very good suggestion. Thank you very much!
|
| |
Replies: 23 / Views: 1,823 |