I was wondering what this penny (2000), which looks normal except for extra spacing on edge making it exactly the size of nickel, is and what it is worth?
It refers to a coin that was struck outside the collar, while the planchet was centered directly above the anvil die and directly below the hammer die. Yes they do have a market value.
BROADSTRIKE -How is a Broadstrike made? When the collar is not completely surrounding the coin, during the strike, a Broadstruck coin is the result. The collar floats on springs independent of the die, and should completely surround the reverse die to help hold the planchet in place for striking. The collar forms the edges of the coins. On coins with reeded edges, the reeding is in the collar, and is formed when the planchet is struck and the collar is in the correct position. Since the collar floats on the springs independently, it is possible for it to get out of position as a result of dirt and debris that causes it to stick in the upward position. When the planchet is struck, the metal is allowed to expand outward, due to the fact that there is no collar to hold it in place. If the collar becomes tilted, or jamed, it allows outward metal flow on one side, resulting in a "Partial Collar Broadstrike". Broadstrikes can be centered or off-center. Here's a link that can explain it much better than I can. LINK
I'm not expert, but that is the best looking broadstrike I have ever seen. I would think that if genuinem it would bring a premium because it is so nice.