Found this on an American auction website. Photo is exactly the same as model I'm needing information on. Considering buying from a local but he knows nothing about it other than it's a 38 cal and can use shortened 38 special brass. Does anyone know what calibre this is? Is it even technically an antique or would I need to register it? Thanks for any info.

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Description from website reads:
BELGIAN OPEN TOP REVOLVER.
Netherlands, late 19th century. Belgian chrome plated 38 caliber center fire open-top double action six-shot revolver with 3.75" octagonal barrel, checkered wood grips and lanyard ring.

upload an image
Description from website reads:
BELGIAN OPEN TOP REVOLVER.
Netherlands, late 19th century. Belgian chrome plated 38 caliber center fire open-top double action six-shot revolver with 3.75" octagonal barrel, checkered wood grips and lanyard ring.


















































