The sun has beaten down on these corners for 15 years..
A home owner from Arizona says:
June 5, 2021
They look pretty close to the ones I have. The piece I have in my hand is only partiality broken but I was able to get some measurements and it seems to be pretty close to the one your showing.
Bob from SWISCO responded:
June 9, 2021
That latch looks like the one on our 95-264. Compare with the dimensions below to see if this is the corner key you need.