Dear Kid, Shirt Cuff Postcard, Mailed NYC to Philadelphia, 1860s river and sky concealed when box is closed

concealed when box is closed

in excellent vintage condition

and I'm not sure what the black line is crossing just above its mouth

which I am sure are Victorian era

Hensgey or similar

Dear Kid, Shirt Cuff Postcard, Mailed NYC to Philadelphia, 1860s river and sky concealed when box is closedFound at the Boston Antiquarian Book Fair, this thing makes me really happy and even if one occasionally has an issue with the US Postal Service, it's pretty amazing that a series of postal workers would see to it that a stamped shirt cuff with handwritten address would make it from New York to Philly in the 1860s! It reads: "Dear Kid, When are you coming over. Try and make it soon. Don't see your tailor without seeing our styles. My regards, to all