Homerunhall please look ...1970 proof set double date and mm lincoln..

BIGDAVE

did i do good or did i waste my time today?

FC57Coins

Me thinks ya done good!!!

Edit with a question:

If the mint mark is doubled - doesn't that mean that the doubling is machine doubling?

LucyBop

No Frankie?

BIGDAVE

Lucy
i looked at over 400 ,1954 thru 1970 proof sets today the only ones i got was the 1970 and a 1969 because the kennedy was deep cam noboby had any cam franklin sets the 50 proof set he had looked like sh1t

FC57Coins
i dont know i am asking if i wasted my time or did good

melikecoins

Dave
I sold one of those on ebay couple of weeks ago.
Still have another laying around somewhere.
Just like mine your's looks to be triple also
Bad thing though it is only machine double.
Glen

ksteelheader

Its machine doubling...........Ken

Gilbert

There are several 1970S Lincolns w/DDO, but that doesn't appear to be one of them; the split (doubling/tripling) aren't that far separated. Although, somewhat dramatic, that does look more like machine doubling.

Frank, the answer to your question is, doubling on the date AND mintmark doesn't absolutely mean it's machine doubling; it is only an indication that it might be.

FC57Coins

<< <i>Frank, the answer to your question is, doubling on the date AND mintmark doesn't absolutely mean it's machine doubling; it is only an indication that it might be. >>



Gilbert:

I agree that there could be a rare instance of a repunched mint mark on a doubled die. However, short of that, and speaking of pre-1980's coins, when the mint mark started getting engraved into the hub, how would you explain such doubling?

thanks!

Frank

Gilbert

However, short of that, and speaking of pre-1980's coins, when the mint mark started getting engraved into the hub, how would you explain such doubling?


Dual hubbing. Second impression out of alingment. In some cases, hubs with a design change, ie. large date/small date or in the case of a '59 Franklin DDO, type 1/type 2 reverse. Granted, the half example IN THIS CASE doesn't entail a doubled mintmark, but I think you get the picture.

beartracks42

There are several 1970-S Lincoln proofs listed in the Cherrypicker's guide. One of them is even tripled. Non of them mention the mm as a part of the evidence. I suggest that you compare yours to their examples to see if you have something rare. A couple of their examples are not well known.

FC57Coins

OK - what I don't understand about machine doubling is this: If in fact machine doubling happens when the machine jiggles and the die hits the coin out of it's original alignment then:

1. Why is it that sometimes only part of the design, such as only the date, gets doubled and not the main devices?
2. if business strike coins only get one blow, where does the second stirke come from?

I'd appreciate any clarification on these questions!

Thanks!

Frank

BIGDAVE

where Is David Hall he can answer the Question?

TWODOGS

<< <i>OK - what I don't understand about machine doubling is this: If in fact machine doubling happens when the machine jiggles and the die hits the coin out of it's original alignment then:

1. Why is it that sometimes only part of the design, such as only the date, gets doubled and not the main devices?
2. if business strike coins only get one blow, where does the second stirke come from?

I'd appreciate any clarification on these questions!

Thanks!

Frank >>

On the business strikes, when the planchet is pressed, the loose die moves a little during the single strike causing the apparent doubling.

ksteelheader

Read your Cherrypickers guide. It explains in detail all of the different kinds of doubling............Ken

cladking

I'm not certain this process is very well understood and I'm less certain of
my understanding of it but here it is. When a coin is struck it enters a semi fluid state.
Under extreme pressure (100 ton/inch^2) metal will nearly flow into the recesses of
the die. Metal is moving even as the die is completing the strike. Any movement at
this point can cause doubling. Exactly what becomes damaged will depend upon direction
and magnitude of the movement and other more subtle factors.

Press operators have been reported to say that strike doubling always involves a loose
press. Of course this could be the cause of the die being loose also, so may not be a
true sole causative factor.

It's tough to tell from the scan but it does look like a real DD. Of course this isn't likely
because it is both dramatic and unreported.

BIGDAVE

found this on ebay there is a big difference between his and mine

1970