I dont know for sure but have never seen an M&P Airweight with a half penny front site and that includes several early 5 screw versions with aluminum cylinders and High Speed hammers.
BTW the M&P Airweight has a shorter forcing cone and longer cylinder than the Model 10 so those parts do not swap.
Also wanted to comment that the half penny FS hung around a bit later than 1952 as evidenced below, (Left to Right) Model 12 four screw Serial C 475544 Shipped July 1960, Pre Model 10, 38 M&P, Nickel 4 screw Serial C 432560 Shipped Sept 1958 and .38 M&P 5 screw, blue, Serial C 328518 Shipped June 1955.
AS an interesting aside the M&P Airweight was the only K frame that Im aware of that shipped with a flat latch.