Need help with pocket knife

[bvannada]

Found this tonight using my Fisher F2, rang up as a mid 70's dime signal. It was located near a tree in my front yard. House was built in 1940. Only mark I can tell is the sheriff's looking badge on it, the blades are rusted in. Super stoked as this is my first pocket knife find. Any help would be much appreciated. The knife is roughly 4 inches.

 

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[Erik in NJ]

1920-1930 date of manufacture is my best estimate. Put it on the What Is It forum...the shape of the badge might provide you with the manufacturer. Nice find!

 

[Tnmountains]

Be a tough one. That shield was used on many old knife. Welcome to t-net as they said try the "What is it " forum for a positive I.D . Nice knife looks old!

 

[bvannada]

Thanks for the help. Is there any way to clean the rust off the knife to possibly see if there is any marking or would you leave it as is? I also don't want the rust to continue to eat at the blades. Thanks