Pat 1876 BAUSCH & LOMBL BRASS MICROSCOPE Very Old

Description

Patented 1876 Brass Bausch and Lomb Microscope.  I have had this for large and beautiful instrument for 50 years and now time to pass it along to another collector.  No need to describe as I have shown in pictures.
History:
One of the oldest continually operating companies in the US today, Bausch + Lomb traces its roots to 1853, when John Jacob Bausch, a German immigrant, set up a tiny optical goods shop in Rochester, New York. When he needed more money to keep the business going, Bausch borrowed from his good friend, Henry Lomb. Bausch promised that if the business grew, Lomb would be made a full partner. The business did grow and the partnership was formed.
I would guess this is one of the earliest B & L microscopes.