Holmes "for Mason & Hamlin"

Holmes "for Mason & Hamlin" as seen on facebook marketplace. Anyone know anything about this?

1932 Mason & Hamlin A9
1877 Blüthner 185 cm Patent Aliquot grand
1883 Henry F. Miller pedal upright
Edward L. Kottick double-fretted clavichord
Lyndon Taylor double-fretted clavichord