I wonder if there might also be another explanation for Crown/V, the Vorrat Zeichen, on this nice and rather early combination gun. Say the gun was made & sold in the early1880s; after a decade the owner decided to trade or sell it trough a gun shop when it experienced the official stamping in the early 1890s to confirm with the new law.
Raimey? Mike?

Cheers,
Jani