Came across this Plank for sale. Does anyone know what model this is?
Could be a 115/3 (the version with pressure gauge) or 118/3. They all look pretty similar... All pre-WWI.
This cutout is from the 1914 catalogue:
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...and this one from the 1925 catalogue:
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Well, I opted for No 115 or No 118 because of the longer, pointier corners of the base (if one can trust the old catalogue illustrations...)