This is a piece of Royal Copenhagen porcelain, likely part of their renowned blue and white collection. The markings on the base provide key information about its origin and identification:
Manufacturer: The crown logo and "ROYAL COPENHAGEN DENMARK" confirm it was made by the prestigious Danish porcelain manufacturer.
Authenticity: The three blue wavy lines are a signature mark, symbolizing Denmark's major waterways (the Great Belt, Little Belt, and Øresund).
Identification Numbers: The number "3405" is typically the pattern or model number, while "7Hx" (or KHX, the painter's initials) identifies the individual artist who hand-painted the piece.
Specific Motif: The text "DEN GAMLE LIMFJORDSBRO" likely refers to the specific scene or motif depicted on the other side of the item, which is the old Limfjord bridge in Denmark.
Dating: The presence of a bar under the letter "G" in Copenhagen (visible in the image as a slight line under the letter) can help date the manufacture of the piece to a specific period, a common practice for the company
