Planchet scrapes on CC morgans ??

[GAB]

I am trying to find out more about the "brushstrokes" I see in several CC morgans.

I believe it is some kind of planchet scrape they did to get the weight right when they were first produced, but I cannot find any info about the practice? See cheek on the attached coin if I have enough detail !!

[michael]

i need a better photo i am sorry i cant see anything

 

 

but this is a really interesting thread

 

i think i have a few answers for you but i need to see a much better photo of the planchet scrapes on the cheek

[GAB]

I did a new scan, and a little "enhancing" to hi-lite this on 3 coins.

(Hopefully I can figure out how to get them onto this reply!)

thx, GAB

[GAB]

I guess I have to do one at a time. Here is a "better one".

thx, GAB

[GAB]

OK, with a little bit of paint shop manipulation, I have managed to get a scan

of 4 of my CC's that have this scrape. (All in a slightly different direction.)

Sorry about all the attempts here, but I will figure this stuff out eventually as I

get more experience with this chatroom environment.

thx, GAB

[Becky-migration]

I think this is commonly called "roller marks".

 

 

 

"Parallel incuse lines found on a coin after it is struck. It is believed that roller marks are caused when the strips of metal are pulled through draw bars (set at a precise distance apart to ensure the planchet blanks will be at the correct thickness). " Mark Feld

 

 

When the coin is struck the dies aren't close enough to cause the metal to flow into the deep recesses, leaving evidence of the marks. I see this the most on New Orleans coins. Sometimes there is no hair detail at all over her ear.

[GAB]

Becky,

Thanks for the info, but I am still a little confused. Are you saying that these scrapes would have been "covered up" by a better strike ? (ie - with a better strike, the scratch

lines would have been filled in by molten metal?) It seems like these lines would be

in other places on the coin as well - unless the jaw is at the lowest point ?

thx, GAB

[Connecticoin]

Yes, if the coin were better struck, the lines would be less noticeable. However, whether they show up at all depends on how many marks were left by the roller in the first place prior to the coin being struck.

 

These "planchet striations" are very common on Carson City morgans. The Van Allen - Mallis ("VAM") book provides a good description of this in the chapter on the silver dollar minting process.

[GAB]

Thank you. That is quite the term - planchet striations !!

I will have to check out the VAM book and learn more.

 

This is a great chatroom. I have learned a lot by reading in it over

the past couple of weeks. I will probably have more questions as time goes

on, but till then - I'll just keep reading and learning.

thx, GAB

 

ps - Does anyone here know how to get ahold of Brian Hendelson?

I believe he was the one that first purchased the proof set that I

now have. (see the signature section of the NGC registry)

I'd love to learn more about it's origin!!

.