Eastern Roumelia (Dealer Alfred Zimmer Frankfurt Am-Main)

Found this in a lot I recently bought of Turkish stamps.Rather nifty I find.Any thoughts
about these stamps?

Like the dealer card.

Never attempted to address the overprints, I assume all are forgeries, and if doubtful then send for certificate.
Not as yet, found a suitable reference for commentary on these.

All three are forgeries :

The first stamp the overprint ink is the wrong shade ,looks to watery .Size of overprint is smaller than my copy .

Second stamp same as above ink is thinner and not dark enough .Tail on lion should end in a point ,all four corner sides of the outer frame should be more clear and show 8 sides as on the originals .

Third stamp ,same as above the left hand side top and bottom corner angles should be more clear not rounded . Frame too thick for the the center lion both should be more equal . Frame and lion should both be thick together or should both be finer in inking ,never seen a thick frame and thin design of lion .