Dave Sr. from SWISCO responded:
December 22, 2016
Looking at your photos, I'm more concerned with the back set on your mortise latch. The 40-049 has a back set of 7/8", but yours looks more like 1-1/4". Your internal mortise latch looks more like the 40-194 which, but this also has a 7/8" back set. Compare the back set with yours and see what you think.
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