Montesa 1967 Trials
Carlo Ramella and Justyn Norek wax lyrical.
Dr Garino's Monty
Manufactured by Trionette-Gesellschaft mbH of Bremen, 1921 to 1930.
This was a kit to convert a motorcycle into a three-wheeler - "das Motorradauto ... der vollkommensted und schnellsted Kleinwagen".
Sources: Oldtimerclub Lachendorf, et al