Tag on sign: “English-made Kerr revolver. Many of these were smuggled through the Federal naval blockade aboard Confederate blockade runners.”

Smithsonian website description of the Kerr:

The five-shot .44 caliber Kerr revolver was manufactured in England by the London Armoury Company and could be fired either single or double-action. Nearly all Kerr revolvers imported during the Civil War were purchased by the Confederacy and were preferred by many Confederate cavalrymen.

Patentee: Kerr, JamesMaker: London Armoury Company Place Made: United Kingdom: England, London