Posted By:
John HarrellLeon,
Based on a bat I have, I would say that the letters NYCS stand for New York Central Station. The bat I have has the letters NYCRR and is made from an old railroad tool, which is what I suspect this bat is made from. My bat dates from the late 1870's-mid 1880's and I would guess that this bat dates from approximately the same period. I have some documentation that shows the particular tools that were used for bats.
John