This is a handle from a Harvey Vinyl Sliding Patio Door. The markings on the glass of the door reads:
G hercute
CAN/CCSB -12M
16CFR1201 C11
7-97 1-2009
1 8 U
Thank you so much for your help!
Tom from SWISCO responded:
September 6, 2017
This is an incredibly common handle. We recommend our 82-080 as a replacement for un-keyed versions of the handle. If you want a key lock, go with the 82-081.