Examples of the type

Picture 1 of the example of 3 Gröscher - Frederick II
© Grinya (CC BY-NC-SA)
Private collection
1779 A
Picture 1 of the example of 3 Gröscher - Frederick II Picture 1 of the example of 3 Gröscher - Frederick II Picture 1 of the example of 3 Gröscher - Frederick II Picture 1 of the example of 3 Gröscher - Frederick II Picture 1 of the example of 3 Gröscher - Frederick II
© andrey6012 (CC0)
Private collection
Found: Bought from Fitz Münzen, München See on the map
1780 A
18.6 mm1.59 g 12h
At the reverse those are the differences:
1. The crown of the eagle is between A and R.
2. Left wing not touching the rim by "M".
3. The "3" is different...
At the obverse I see the "FRIDERICUS" begins at the end of the neck...