Textured Canadian 1967 Cent

ikandiggit · Member

I was going through a previously searched BU roll of 1967 Canadian Centennial cents (wish the guy had worn gloves) when I found one of the coins had a completely different surface than all the others. The surface has a textured finish compared to all the others which are smooth. It's consistent on both sides.

I've checked several rolls in the past but have never come across another one like this.

What would have caused this?

Textured:

Normal:

Textured detail:

Normal:

eagames · Expert Member

Being already searched might mean that coin was added.
Maybe the other searcher pulled one good coin and replaced with one that had been stripped in acid or something so it looks like that.

Just a SWAG. Wink

Dick · Expert Member

Hi Ed! From the pictures, i would say that was a good guess.
It wouldn't be thbe first time a roll has been 'high-graded"., (stripped of one or more coins), for you eastern 'dudes'., by some slippery clown!
Dick

Robert · Senior Member

Since the texturing appears on the design an on the background/field, it seems to me that the texturing is either something done to the entire planchet and/or die at the Mint (not likely) or it's some sort of post-mint treatment/damage (much more likely).

ikandiggit · Member

Notice that there is a struck thru wire/string on the side of the coin (right side looking at the screen) which isn't affected by the texturing whereas all the other elements on the coin are.

Dick · Expert Member

Hi Barry, I saw that when I first read the thread, but it slipped my (feeble) mind. I can't see it well enough to comment pro, or con.

Robert · Senior Member

I'd like to see a closeup of that strike through. It certainly looks like a strike through but it could also possibly be a scratch.

I'm not sure how a textured planchet/die would interact with a strike through. Would a textured planchet, for example, retain any part of its texture? Or would it be completely erased during the strike through?

The diameter of the struck through wire seems to be big enough to interfere with the tiny texture bumps.

Dick · Expert Member

barry, I would suggest you ask Mike Diamond for his opinion. Mike, are you there? I believe we all would like to know what happened.

Robert · Senior Member

If this coin was struck by textured dies or on a textured planchet, there should be more coins like this out there. A mint doesn't use one pair of dies on just one circulation strike. And the mint doesn't doesn't process planchets in batches of one. It's conceivable that this is some sort of trial strike but I highly doubt it.

ikandiggit · Member

I really do appreciate all the time and effort going into this. It would be nice it this was "something" but even if it isn't, I think it's pretty interesting.

Here's a couple of pics of the "struck thru":

Robert · Senior Member

Observations/questions for experts more knowledgeable than me:

1. I can't tell, but I think I see "texture" in the strike through.
2. On the upper photo, are those additional strike throughs 1 denticle above and 7 denticles below the strike through? (not the red fiber)
3. Does the strike through stop just before the wire rim or does it continue over the rim? It looks like it stops but I can't tell.
4. Are those radial flow lines near the wingtip? (that would indicate late die state perhaps)

This kind of thing is fun, I just wish I had more to offer than just observations/conjecture.

Dick · Expert Member

Barry, from the view on the closeup, it looks like the edge of the rim has a shallow, (for want of a better word), spread, where something was over the edge, which confirms a struck-thru. nice photos, by the way!

ikandiggit · Member

The other things are just fibers. When I was photographing the rim, I realized the the struck thru continued down over the side and onto the edge of the coin. (pics 1 and 2)

Pics 3,4, and 6 do actually show that the texturing is inside the struck thru which I couldn't see until I blew up the photographs. I guess that answers a lot of questions right there.

ikandiggit · Member

I don't see any flow lines. These are a couple of pics to show the evenness of the "texture" over the coin:

Dick · Expert Member

Barry, maybe it's me, but i get the impression that the "die" was not smooth. Could be dirt, dust, anything on the surface that would leave such an impression, all over everything. Maybe Mike D. will notice, and comment.
Dick