The kind is determined by the size of the reverse. Elements that you should pay attention to marked on the photo in red.
On the lower parts of the wings over the legs, the feathers wide, grooves on them short and small, the first quill of the second row has a notch in the center (the catalogs often referred to as "feathers with notchings").
On the reverse under the denomination mint mark LMD, the image size is less (the distance between the branches and edging more).
F - 4: AVERS - piece 2.1 (f-5), reverse - PCs And (f-6).
Degree of rarity: 1.
Added by: Admin, author photo: MushrO_Om