Replacing my existing Acorn DorWAL handle set

need help finding a replacement handle door only has 1 tag on it it reads -, spec sgd-a2 sgd-a2-hp75 . it also reads,series 1200 and code 130-1 size is mst: 181-3/8 x 96and 181-3/8x92 frame is brown in color and handle is brown wood with two phillips head screws that measure 3 1/2 in apart on center please help door is relatively old but in good shape