(046) Anonymous Square with Mother of Pearl Keys (004) Robert Nunns, Clark & Company Square – #9804 – (ca 1858) (041) Chickering Square – #22162 – (1860) (050) Smith, Atherton & Co – #1797 with Mother of Pearl Keys (007) Steinway Square – #18436 – (1868) , (053) Steinway Square Grand – 34415 (042) Decker Bros Square – #11201 – (ca 1876) (045) Wm Knabe & Co. Square (048) Chickering and Sons Square – #57813 (049) Chickering and Sons Square – #25995