Tricolored / signal lantern PB410 fixed mounting

Lanterns from the series PETERS & BEY 400 for mounting at the masthead:

Sailing Lantern (360í tricolor): red / green / white (Port / Starboard / Stern)
or
Signal Lantern (360í) in various colors.
For example, two red all-around
lights yield the "vessel not under command" signal.
Housing entirely of stainless steel. Integrated mounting plate D = 51mm.