Help needed with rare german coin

KM# 7 5 MARK
27.7780 g., 0.9000 Silver 0.8038 oz. ASW Obv: Denomination
and date in palm wreath Rev: Bird of Paradise
Mintage:19,000

First I always weighed and measured coin.

First of all, I have seen a modern forgery of this coin so fakes do exist. The one I have seen is a casting made from an image transfered from an original coin. The weight was off - the coin had no flow lines and the central details were typically weak. My impression of the coin pictured here is that it very likely may be a forgery of the same class.

As to my observations that make me concerned, on the date side at the 2-3 o'clock position something is wrong with the dentils near the edge. Such an irregularity often points to a transfer impression which has been altered or damaged in the process. Original coins made by well established national mints like Berlin should never have problems like this. If the dentils have a slight depression at the centers of each (like a dimple) - it can be from shrinkage of a casting. In any event, the dentils seem irregular.

On the Bird side - notice the apparent file marks around the edge - this is often evidence associated with cast copies. The maker has to grind off seams located along the edge and this is done by grinding.

The central weakness troubles me as well.

Given the rarity of this coin I would be very suspicious based only on these pictures.

Krause weight is correct. 22,6 g is as fake as you get them. I'd definitely say you made the right decision.

Great story sel.Nice piece of history you own.I have another one from same seller.Obvious copy.Dentils weak and out of shape.

The 2 mark coin is an extremely poor cast copy.
Please check here http://www.ma-shops.de/shops/search...EUR&limit=50 for some examples of German Neuguinea.

That coin is definatly fake, you can tell by the rim, and lack of details as well as the color. Its a white metal composition quite often use for forging fake silver coins.