What does the overstamp look like for a 1942 mercury dime?

The overstamp looks like there is a 1 in front of the 2 in "1942" and is quite noticeable.

However, there is a variety of the 1942-D Mercury dime that is a 2 over 1 also which is less noticeable, for this the best indicator is to look at the "4" it will have what looks like a second tail under it and the "2" will look to have dot right under the far left base.