In some cases, declaring a die defect an "error" is determined by the severity of the defect. For example, die wear is usually not considered an...
I consider clashed dies, die cracks, die breaks, etc. to be "die errors". Since they're not supposed to be there they are consequently "errors"....
It's a strike-through error, but I can't establish the identity of the obstructing material with any certainty. It could be "grease", since...
Grease strike. You'll note a faint incuse "ghost" of Lincoln's bust within the larger grease-struck area. This is where the grease flowed toward...
Considering how battered the reeding is, I'd say post-strike damage.
It's a type of broken collar. Specifically, it's a bilateral split collar. No part of the working face of the collar has broken off. Instead,...
I know the coin with the thick-appearing edge is the allegedly underweight specimen. You can find normal-weight coins with this appearance in all...
Without an accurate weight your observation that the coin is unusually light must be evaluated with a degree of skepticism. The edge view...
This coin was altered outside the mint. The edge, which is concave in vertical cross-section, indicates that the coin was probably encased in a...
Yep. It's a lamination that folded over before the strike. Nice one.
It's a well-known shattered die that incorporates a 50% retained cud. Its value is somewhere around $125, judging from eBay prices (which vary...
Up until 1990 the mintmark was punched into each working die by hand. So its position and orientation will vary.
The smaller strike shows a straight edge. That's characteristic of most chain strikes.
That make sense if you equate "strike" with "downstroke". I keep the two concepts separate. A saddle strike involves one downstroke and two...
Most struck in burrs are "rim burrs". These are produced during or after upset, often just before the coin is struck. They generally take the...
A saddle strike doesn't always show the iconic "hump" or "saddle" which is why the name is somewhat of a misnomer. I prefer the name "tandem...
The coin was struck in a dual or quad press. Such a press features closely spaced die pairs. A planchet can straddle the gap between the two...
It would be more accurately referred to as a blanking burr. It's a metal burr produced by a dull blanking die or a hole in the perforated base...
Neither is a rolling fold. The dime appears to be post-strike damage, with metal from the edge having been relocated onto the design in the form...
It is indeed a saddle strike. The two off-center strikes were delivered simultaneously (in tandem) rather than sequentially. The smaller of the...
Separate names with a comma.
