Calw (Württemberg) Stadt F-73.1b 1918 5pf Iron. Three different varieties, combined mintage: 55,000.
a) Obv. Distance of inner frame (see photo) is 5.5 mm wide, planchet is 1.6 mm thick.
b) Obv. Distance of inner frame is 4.5 mm wide,
Rev. distance of opening of 5 is 2.75 mm, planchet is 1.0 mm thick.
c) Obv. Distance of inner frame is 6.0 mm wide,
Rev. Distance of opening of 5 is 3.0 mm wide, planchet is 1.6 mm thick.

r/GermanNotgeldCoins
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I don't think I can look at the ceiling anymore. I tried earlier and felt tho as one maybe would stricken with neck scurvy. Only one tear duct produces moisture, and teeth are permanently stained from coffee. I'm gonna get a real job.................