Flottorp I.D

[Flyinalear]

I have a flottorp prop in which the dimensions/specs measure to that of the curtis 0X5. The only #s I can find are 12380, about 1" tall on the front of the prop about 8" from the hub. I can't find anything online referring to these #s, is there anywhere else that I might find their meaning? Flottorp decal states "both blades alike" & "grand rapids mich". Seems like this is from a jn-4? Any other info on this prop and the #12380 on it would be appreciated!
Thanks

[Dave]

There are some other hubs that have the same dimensions as the OX5, including some more modern ones. I suspect the 12380 is simply a serial number, which isn't going to help much. Flottorp did make some propellers for the 0X5, though.