Yeah, just as I said I'm researching now the details of the aircraft/engine type and how could it get here. The company's website lists a whole bunch of oldtimers, but it will take some effort to pinpoint the right one. I guess I need to take it off the wall (for the first time in some 14 years!) to check the other side, which may have the propeller type & engine specification (I know only the serial number and manufacturer as of now).