Window latch/hinge identification

A contractor from Honolulu, HI says:
July 13, 2015
This piece is roughly 1-1/4 inches wide at the base and roughly 1-3/4 inches long before it angles up about 1-1/2 inches.
User submitted photos of window hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
July 14, 2015
I'm not sure this part is still available. It looks very, very old. How exactly does it latch the window closed. Could you please send us some photos of how it relates to the operation of the window.
A contractor from Honolulu, HI says:
July 14, 2015
I unfortunately am unable to get any pictures relating to the operation of the window at the moment. But as you can see from the picture I have attached, the top portion of the piece is attached to the bottom of the window using two screws. The angled portion of the piece is angled enough to let the window below it open first. (Hence the windows can only open if the window below it is opened first.) This piece acts more like a handle instead of a hinge or a latch, just used open and close the window.
User submitted a photo of window hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
July 16, 2015
Thank you. This is just so old, and so peculiar, I don't know if we'll get anything that's quite like it. However, could you use our 90-152 wood window lock? It is meant for casement windows, but perhaps you could adapt it to work for this one.
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