Vintage brass boat propeller.   It is a Michigan Model AJC488.

Approximate Measurements

The propeller has a 12" diameter and is 4" deep.   The bore is 1".

Markings

 Michigan AJC488

Condition

Good condition for its age with moderate to severe nicks on the blades, see pictures.   It has a nice patina tone.   See description above for further info on the condition.

Inventory Number    6402