These stores frequently deal in used and vintage instruments. Music store ClosedKrasnoprudnaya Ulitsa, 28

Known for having a large inventory of vintage and used instruments. They have a dedicated workshop and often buy back or take items for resale. : Krasnoprudnaya Ulitsa, 28 Location 2 : Pravdy Ulitsa, 7/9 Mir Muzyki Music store ClosedSadovaya-Triumfal'naya Ulitsa, 16с1

A long-standing salon with over 10 years of experience. They carry a wide range of bowed instruments and accessories. : Tverskoy Blvd, 9 Musical instrument repair shop ClosedOrdzhonikidze Ulitsa, 11с42, Pod"Yezd 9

If you are looking to sell a violin in Moscow, there are several specialized violin makers (luthiers) and music stores that buy or accept instruments on consignment. Specialized Violin Makers & Luthiers

While heavily focused on guitars, they operate as a full-cycle restoration workshop and may evaluate acoustic instruments for trade or purchase. : Ordzhonikidze Ulitsa, 11с42 General Music Stores (Buy/Trade/Consignment)