Bolt operated suppressed pistol, I would think a $200 stamp would cover it. I had never heard of this, thought I would toss it out for your enjoyment. It's a 73db pistol!

So I am watching a show called Secret War on History, and they are covering the Belgian resistance during WWII featuring a dress designer named Hardy Amies who led a resistance cell. As a part of the show, they cover, in great detail including an x-ray cross-section, this pistol, called the Welrod or Wellrod.
https://en.wikipedia.org/wiki/WelrodIt's essentially a suppressor with a magazine, fires .380 (or 7.65 Browning), often nicknamed the "bicycle pump", and was developed by the British SOE for use in executing collaborators.