You can replace it with Marvin's Contour design - 93550004
Marvin has Discontinued the traditional Curved handle used on the Casemaster windows.
This item is no longer available.
You have 3 options for Handle replacement - Straight, Coutour or new Cover with Folding handle
55311 - Straight Handle Bronze or White
55317 - Contour Handle Satin Taupe, Bronze or White
55305 - Cover & Folding Handle