I don't have an Alco or a GE 44-Ton plate avaiable to measure, but a March 1949 GE 70-Ton builder's plate is a rectangle 8" wide X 5" high (0.050" X 0.031" in N-scale), if that helps. Also, for reference and of possible interest to Canadian modellers, a July1954 Montreal Locomotive Works builder's plate is also a rectangle, 12 1/4" wide X 6" high. Both plates are primarily black with silver border and lettering. In N-scale, the GE logo on the 70-Ton plate would be about 0.005" in diameter and the "General Electric" lettering would be 0.003" high. The MLW logo might actually be readable as it would be 0.020" wide X 0.016" high.
Cheers,