Could you please help me identify my father's bike?
Rico was a bicycle manufacturer from Switzerland (Wallisellen, a town near Zurich). Rico PF means &quot;Rico - Paul Fries&quot;.
You can check some badges on the swiss auction sites, to try to pinpoint the production year. For example:
https://www.ricardo.ch/de/a/rico-velo-rad-marken-schild-wallisellen-1070171586/ (in the description it says it is from the 60s).
Good luck with your search and please keep us updated!
Addition 1: Duralca is a brand that at the time was owned (and founded) by Jacob Caironi, a Swiss cyclist (more info in german here ). The company Duralca (the name coming from from Duraluminium - Caironi) dissolved in 1972 so your bike is unlikely to be olderyounger than 1972.