Machine Doubling : Poor man's Double Dies

[Coin]

I have a small collection of machine doubled coins that I am assembling just as a side adventure - for kicks . I think they are cool/interesting to find and a whole lot cheaper to assemble a mirror set of these to some of the actual rare and expensive Die Doubled counterparts out there.
Is there anyone else out there in the world that is interested in these more common machine doubled coins ? Are there any out there interested in trading ?
If anyone else is interested , I could put some photos up through photobucket and post them or send them to you through PM/Email.

Moderators ....anyone know of any groups/clubs that collect , trade , or sell these ?...or am I all alone in this endeavor?

[diamond]

I am an enthusiastic collector of extreme examples of machine doubling, e.g., ones that show clear separation of primary and secondary design elements, or ones that show dramatic smearing of the design. I don't bother with the ones that merely show marginal shelving or slight smearing. Check out figures 3 and 4 from this article to see what I'm referring to:

http://www.minterrornews.com/news-1-30-07-doubling.html

[Coin]

wow , in just 5 minutes , I picked up a boat-load of information from your link . Thank-you , and to believe I have been to that site and missed that. I'm sort of on my own with this hobby and gather most of my information from coin bulletin board chat rooms and from reading books, magazine/paper subscriptions , or speaking to folks at coin shows .
From what I gather , the type that I am assembling is the absolute most common and cheapest form of doubling , like you refer to as simple shelving to keep it simple . I'll put up some pics later tonight and try to figure out how to post a few examples of my poorman 'doubles' .
I have collected off and on for over 30 years , but never with any kind of order or discipline until about 2003 when I retired from the Army Guard which took a lot of my spare time until then.

[diamond]

The "poormans doubled die" actually represents die deterioration doubling. It is, of course, most common in 1955 cents, but does occur in other years, viz. 1947, 1948, and 1953. Some "experts" attribute it to "abrasion doubling" or "outside die abrasion doubling", but there is absolutely no evidence to support this diagnosis and a large body of evidence that supports DDD as the cause.