Maryland Code, Natural Resources § 10-2B-02

1. The antique status is established by the owner or seller through documentation showing provenance and that the covered animal species part or product is at least 100 years old; and

2. The total weight of the covered animal species part or product is less than 200 grams; or

1. The covered animal species part or product was legally acquired;

2. The covered animal species part or product is a fixed or integral part of the item; and

3. The total weight of the covered animal species part or product is less than 20% of the total weight of the musical instrument, knife, or firearm.