Thank you for submitting your item for appraisal. This appears to be a silver plated trumpet, a Bach Stradivarius model 37 made in Elkhart, Ind., together with a blue velvet lined original case, apparently in good condition. The estimate is based on similar items sold at auction. Prices in the trade are usually higher and can vary. A replacement value for a vintage fully overhauled trumpet would be threefold the high estimate. This would be the price you would pay in the specialized musical instruments trade.