What Year To You Think Goes With This Scotts 114 Locomotive

Here is a Scotts 114 Locomotive on a cover with postmark of 13 February, 10:30 PM, but no year. The stamp was not issued until 27 March 1869, so that eliminates 1869.

13 Feb in 1870 is a Sunday. Were the post offices in Loch Sheldrake, Sullivan County, NY open on a Sunday night at 10:30PM in those days?

13 Feb in 1871 is a Monday. While now we move to a weekday, but 10:30 PM still seems late for a village post office to be open and processing mail. Notwithstanding 1871 seems likely the year of use. Do you agree or think otherwise?

There is both a Devine Corners Road and a Devine Corners hamlet that may be somehow related to Mrs. Elizabeth Devine in Loch Sheldrake, NY.

Appreciate your analysis of this minor mystery.

1870
The postmark is from New York City.
Sunday not a postal holiday until the 20th century.

Add: Large banknotes released in spring 1870. A city of the size of NYC would have ordered stamps frequently and had the "current issue" in Feb 1871, so very unlikely that late.

Thank you for your input, John.

Lead me to look into the decline in Sunday mail service. Here is an interesting article about Sunday mail delivery stopping in 1912, for those who may be wondering. https://www.theatlantic.com/technol...1912/281370/

Don't have the answer, but I love the recipient's name.