Struck Through, filled die, or what?

[russellhome]

I found several varied versions of these in some 2005 P Ocean View nickels I recently searched. All coins are from the same dies (I found a marker on the obverse), but the missing stuff is different on each coin. I've search about as many 2005 nickels anybody, and I've seen struck through grease all over the place - distorting the letters and basically making the coins look awful. But I have not seen much of this. So is this struck through also or a filled die? If it is a filled die, I would have expected it to be a progressive thing -- and not hit and miss all over the place.

http://www.idsimis.com/photos2/yuck0.jpg

http://www.idsimis.com/photos2/yuck1.jpg

http://www.idsimis.com/photos2/yuck2.jpg

http://www.idsimis.com/photos2/yuck3.jpg

Also... these OIV nickels tend to have a weak spot just above the FIVE CENTS -- where chips form and the die starts falling apart (See example below). This is not the case on the coins above, but I often wonder what happens to those chunks of die that dislodge during the process.

http://www.idsimis.com/photos2/oivddr2b.jpg

[diamond]

"Filled die" and "struck through", along with "grease strike" are used pretty much interchangeably. In practice, "filled die" is used for the sort of pinpoint loss of letters and numbers that you have illustrated.