The following "Amster-pipe", contributed by Peter Jaimez has no number or marks on the stem. The pipe is small and very light. It only says Amster pipe.
Peter believes it is a French pipe because he found an add for "Amsterdamer" tobacco, a French brand with a recipe purported to be from Holland. It appears the pipe was an incentive to buy the tobacco, the words "ultra legere" (very light) can be read in the capture.
If you have information about Amster-Pipe, who made them, or Amsterdamer tobacco, please add it here, or send it to firstname.lastname@example.org and we can add it for you.