This is a very old and rare Sonor marching drum that was created in 1891. Has some wear but is still in good condition.
Thank you for contacting Mearto with your appraisal inquiry. Based on the photographs and description provided, the subject of this appraisal is a Sonor marching snare drum, circa early 1890s. According to the current owner, the piece was acquired via inheritance. The piece appears to be in original unrestored good condition.
Marching drums from this era are rare and auction records that can be considered comparables are sparce. The earliest Sonor marching drums at recent auction settings are from the WWI to WWII era, and top out at $400, but are not close comparables. The closest comparable was found on eBay, having sold in June 2020 for $177.50, but in worse cosmetic condition than this piece.
In consideration of the factors noted, a Fair Market Value (pre-auction estimate) of this piece based on comparables observed in the market would be estimated at $300 to $400.