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A good dynamo is a sure way to make all the other bicycles jealous
and do both of those with an equally beautiful vintage looking adapter
If you are as interested in these sort of variations as I am
Probably from the 1920's-1930's
Mercedes-Benz Bakelite Tire Pressure Gauge office A good dynamo is aPeriod German tire pressure gauge from Mercedes in Bakelite. Possibly post war made, but this style was introduced in the 1930's and continued in production into the post war years. It does not work as far as I can tell. It does hold pressure when you put it on a tire but I did not notice any reading.
