Henri Pieper was a large producer of Belgian guns. He is credited with the development of the mono-bloc in some circles. Quality ranged from moderate to very good but he was not a top tier Belgian maker on the order of Masquelier or Francotte. He died circa 1902 and the business was continued under the name Ancien Establissement Pieper , among others, and was eventually absorbed into Fabrique Nationale. My experience is that Pieper guns sell between $300 and 800, depending on original quality and condition. They can certainly be fun shooters.
