Mid-20th Century Sher Mohammad Full Baritone Sitar

This is a surbahar-sized sitar, not a surbahar.  Its main gourd is cut like a sitar, not a kachuwa-style cut that is characteristic of surbahar.  This instrument has been authenticated as a Sher Mohammad & Sons, originally sold by Saeed Music Palace in Karachi. 
 
Spectacular. 
 
Vintage subarhar-sized sitars are exceedingly rare.  View an example from Rikhi Ram here. 
 
We call these full baritone sitars for want of a conventional nomenclature to describe them.  One of the photos depicts this instrument next to a Barun Ray surbhar.  
 
Photos courtesy of Cana Rochbell, its lucky owner.  Thanks Cana!