Manhattan Pocket Series II
Characteristics of the Series II Manhattan Pocket include:

--
larger grips
--
large trigger guard
--
thumbnail (blade) shaped front sight
--
one-line New York address
--
December 27, 1859 patent date on bottom of frame
-- serial numbered 1050 to 4500 approximately
The Series II Manhattan Pocket pistols have 6-shot cylinders,  the
December 27, 1859 Patent date on the bottom of the frame immediately
in front of the trigger guard (Bottom Photo), a front sight in the form of a
blade, and a larger trigger guard and grips. It also has a ONE line New
York address.
The Series II Manhattan Pocket pistols were
originally believed to have a serial number
range from 1000 to approximately 4800.  
Continuing research suggests that the actual
range may be more like 1050 to 4500.  If
that proves to be the case, less than 3,500
Series II Manhattan Pocket pistols were
produced.