The symbol in the attached photo is on the side of a 1940s motorcycle purchased from a police vehicle auction. The symbol in question is mounted on the frame near the rear axle. Can anyone shed light on what this symbol may mean?
This was originally a Harley Davidson police motorcycle. The symbol was on the motorcycle when purchased at an auction of used police vehicles. I am not sure it is Christian, but I see a cross with a shield behind it and a banner hanging below the shield. I am guessing it is a symbol used by a fraternal Christian org, maybe a policeman's org. I have added an enlarges image.

