Lang Liberty Prop

[msprior01]

Dear Dave,
Considering selling this propeller on Ebay, wondering if you can help identify age and aircraft that it came off. Here are the markings on the hub:
400 H.P. Liberty Motor
Lang Propeller No. 3507A
Pitch 1.800 DIA. 2.642
DR. No. L.P. 401E L.H.
GW 52 (Navy Anchor Symbol appears on edge of hub)

Dimensions:
104" Long
13 1/8 Hub Width

We've attached pics, please let us know if they are sufficiently clear. If you'd like it for your collection, make an offer with identifying info., otherwise thank you for your expertise and time.

Best regards,
Scott Prior
Charlottesville, Va
434-245-9211
C) 434-825-9719

[Dave]

Most likely a Navy flying boat with a Liberty engine from the late teens or early twenties. Do you have a photo of the rear of the hub? It may be part of a 4-blade combination.