Your thoughts on this quarter. the scan makes it look s if the rim is rougher than it actually is, but I'm interested on your thoughts on why it looks like there are 2 rims...
Based on this descriptiopn I don't think it's a railroad rim as the edge of the coin is normal..... Partial collar: Often known as "railroad rim" errors, the edge, not the rim, is the portion of the coin affected. It occurs when the collar is pushed somewhat below the surface of the lower die, so that the upper portion of the coin is free to expand beyond the confines of the collar, while the lower portion is restrained. On coins struck from a reeded collar, partial reeding exists on the area restrained by the collar. The error gets the nickname "railroad rim" from its appearance - the coin, viewed edge-on, resembles the wheel from a railroad car. I thought maybe it was a filled die error, but the picture they used as an example, (ironically it was a 1994 washington quarter!). doesn't have the separation between the 2 'rims'.Here's the link to the page I was referring to.. http://www.coinworld.com/NewCollector/Errors/Striking.asp See what you think...
There are at least six causes for an apparent "double rim". For otherwise normal quarters, the three chief causes are: 1. Slight horizontal misalignment of the obverse (hammer) die. Coin metal fills the rim gutter of the die (producing an "inner rim") and also squeezes laterally into the gap between die neck and collar, producing an "outer rim"). The "inner rim" is the true design rim. 2. Collar clash. The die hits the top of the collar and/or scrapes along the working face of the collar. This damages the rim gutter so that the top or edge of the design rim shows serrations from contact with the ridges on the working face of the collar. 3. Finning. Excessive overall striking pressure, or increased localized striking pressure due to slight die tilt, can cause coin metal to extrude into the narrow gap between die neck and collar.
Thanks. Is this a desired error that might be worth sending to CONECA or is it pretty common and I should just spend it...
I am a board member of CONECA (Seat #4) and contribute at least one article to each issue of Errorscope. All three types of "double rims" are quite common and carry no extra value. So spend it if you'd like.
boy I'm striking out on these errors I'm finding...thanks for the information....I'll just to have to keep hunting...I'll also have to read your articles...
