Dated 4 March, 1927, two imperf Taxe (postage due) 15 ct stamps canceled 'St Pierre et Miquelon' over a circular 'T / N.Y.(?!)) (taxe) marking and a '15 centimes / A' circular marking, on piece.

Is this New York that the possible N.Y. stands for? And what does the A in the second circle stand for?
(Too bad there is not the whole envelope to see.)