Die chip and weird surface profile-groove lines

in2Coins

Any explanation regarding fine lines (striation) on coin’s surface?

AUandAG

see the whole coin? Die polishing comes to my mind.
bob

jmlanzaf

@AUandAG said:
see the whole coin? Die polishing comes to my mind.
bob

But the lines extend onto the denticles and there's also lines on part of the date.

I vote polished.

AUandAG

@jmlanzaf said:

@AUandAG said:
see the whole coin? Die polishing comes to my mind.
bob

But the lines extend onto the denticles and there's also lines on part of the date.

I vote polished.

But how does someone polish inside the eight loops?
bob

CaptHenway

Do a search for "drawing bench" and read the many threads that have discussed long, parallel planchet scratches on U.S. coins in general and Morgan DOllars in particular.

AUandAG

@CaptHenway said:
Do a search for "drawing bench" and read the many threads that have discussed long, parallel planchet scratches on U.S. coins in general and Morgan DOllars in particular.

Ah ha, forgot about planchet adjustments... Yep, makes perfect sense now. Overweight planchet filed down to proper weight and then struck.

Thanks for the reminder Capt.
bob

AUandAG

Mint employees would sit at these benches and make any necessary adjustmets, with files, to overweight planchets. Underweight ones went back to the melt pot. In Carson City, this job was done by women for whatever reason.
bob

jmlanzaf

@AUandAG said:

@jmlanzaf said:

@AUandAG said:
see the whole coin? Die polishing comes to my mind.
bob

But the lines extend onto the denticles and there's also lines on part of the date.

I vote polished.

But how does someone polish inside the eight loops?
bob

Well, you can work a wire brush but it also shows up on the 8s.

The captain's suggestion makes the most sense, although I still don't understand the denticles.

OAKSTAR

My first thought, before reading the posts was feeder finger damage. I don't even know if they had feeder fingers back then.

Typekat

Die stress lines is what I’m seeing in the field.

Explanation #7 if anyone’s counting

Married2Coins

8

I see tiny lumps along the lines. That indicates pits in the dies in addition to the lines so I vote that the dies were polished and the lines we mostly struck out on the 8's - not so much on the border teeth. Also lines in the field are aligned with the flow lines at the top of the "1."

OldeTowneCoinShoppe

It looks like common flowline texture to me.

davewesen

do the lines radiate from the center? If so I'm with #7 of Typekat

Married2Coins

@OldeTowneCoinShoppe said:
It looks like common flowline texture to me.

IMO, definitely not flow lines!

jacrispies

That the regular, ol' fashioned die deterioration.

Take a photo of the left or right field and see if the lines revolve around the center or are parallel to each other. That will confirm whether or not it is related to the die polish, planchet marks, or deterioration.