2 Sgr. Black on blue, variety "inverted watermark", having full margins and having bright colors extremely fine copy, neat cancelled with number postmark "36" - Kleinankerholz (government Bez. Köslin), scarce and in the catalogue value clearly undervalued variety, expertized Meier BPP and photo expertize Voigt VP (2015) : "genuine and immaculate. The variety with the inverted watermark is proportional to the large total print run rare. "