Need a replacement door handle

I'm not sure what might work, since yours is fairly different, but take a look at our 40-049 and 40-193 handle sets to see if either of these would match up to yours. Carefully go over our dimensions to confirm. Also look at the internal mortise latch 40-193 to see if you only need to replace that part. It's possible your handle is fine, and it's just the mortise that is damaged.