Antique Brass Railroad Lock ,New York New Haven and Hartford Railroad

This antique New York New Haven and Hartford lock is cast of a brass heart shaped switch lock manufactured and marked by S&E M.Co
It is referred to as a "cast back"
On the front, the name of the railroad is cast in script letters, New York, New Haven, and Hartford Railroad. 
Notice that the N is shared between the words New York and New Haven, and the H is shared between New Haven and Hartford.
A very cool, very rare, very collectable piece of railroad history.
There is no key with this lock
It measures 1/2" x 3 3/4" x 2 1/4" with 10 original chain links


The New York, New Haven and Hartford Railroad commonly known as the New Haven, was a railroad that operated in the New England region of the United States from 1872 to 1968, dominating the region's rail traffic for the first half of the 20th century.
The New York, New Haven and Hartford Railroad was formed on July 24, 1872, through the consolidation of the New York and New Haven Railroad and Hartford and New Haven Railroad.
It owned a main line from New York City to Springfield, Massachusetts via New Haven and Hartford, Connecticut, and leased other lines, including the Shore Line Railway to New London. The company later leased more lines and systems, eventually forming a virtual monopoly in New England south of the Boston and Albany Railroad.
Beginning in the 1890s and accelerating in 1903, New York banker J. P. Morgan sought to monopolize New England transportation by arranging the NH's acquisition of 50 companies, including other railroads and steamship lines, and building a network of electrified trolley lines that provided interurban transportation for all of southern New England. By 1912, the New Haven operated over 2,000 miles of track, with 120,000 employees, and practically monopolized traffic in a wide swath from Boston to New York City.
The first line of the original system to open was the Hartford and New Haven Railroad, opened from Hartford to New Haven, with steamship connections to New York in 1839, and to Springfield, with rail connections to Worcester and Boston, in 1844. The New York and New Haven was built later, as it ran parallel to the Long Island Sound coast and required many bridges over rivers. It opened in 1848, using trackage rights over the New York and Harlem Railroad (later part of the New York Central Railroad system) from Woodlawn in the Bronx south to Manhattan. With the opening of Grand Central Terminal in 1913, New Haven's New York City terminal was moved there