I was looking through some of my German ½ mark coins:
and noticed that my 1919-J coin had a strongly doubled “J” mintmark.
This isn't noted in the SCWC or on the Numista webpage for this coin. Some of the date-mintmark combinations for coins in this series have a notation in the “comments” section for their line in the valuation table that “overdate exists”. On my coin, the actual date (on the other side of the coin) looks normal, it is only the mintmark under the eagle that is doubled.
I have never posted a picture before (my computer skills are not very good), but for this I did take a picture with my cell phone camera:
Not bad for a first attempt at posting a photo - right?
This is a really clear example of a double mintmark; I thought everyone would enjoy seeing it.
Not sure if things like this should be added to the valuation table.








