antique Michigan boat propeller 3 blade vintage aluminum outboard motor prop MB1923

Antique vintage three bladed aluminum, or perhaps a zinc alloy, boat propeller, a Michigan model MB1923 that measures about 7" across and 2 1/4" across the back of the prop. We're not sure if this is actually from 1923 or what model / type of boat motor this propeller fits, but it would be great nautical decor or repurposed as a boating themed lamp etc..