Help In Identifying Navajo Buckle Signed LM

I would appreciate any help in identifying this buckle which I believe is Navajo and marked sterling and LM with the L slightly above the M. Would also like to try to date it if possible. Thanks

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maybe Leon Martinez

You nailed it, Leon Martinez. The date is a little more difficult. I guess him to be in his early 50s, his style is still like this. Wouldn’t think any older than 1990s. Thanks for sharing.