Just like coins. Do not clean the more you clean the less its worth. Just keep the knife in a dry enclosed container. Consult an antique professional.
I found it walking home from middle school that waa about 10 yeara ago now im just curious about the history and price of it says floda on it but thats it. O ly if i could post a pic of it
There is chore oil but the value of most antique knives go down if the are cleaned improperly
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