Switzerland Mi 145 & 152 Forgeries

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The very prolific forger Kull made fakes of these overprints.
Fortunately they are readily recognized.

These traits of the forgery on the right are easily seen in the right wing.
1. The space between the feathers and the main branch is wide
2. The 2 bottom feathers are much smaller in size
3. The 4th feather from the top is very curved and not parallel to the others