Casement window lock latch hardware

A home owner from Washington, DC says:
Jeld-Wen Siteline Casement Windows. Numbers etched in glass are "NRC-B-N-877" and the precise model is given, I am told, in the following number also etched in the glass: "G0316505688097."
A home owner from Washington, DC says:
A picture of the correct part can, I believe, be found at the following website https://www.swisco.com/page-id-part
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Bob from SWISCO responded:

Sorry but I am afraid I can't cross-reference those window codes to a specific latch. Can you show me a picture of the latch in question? That would help narrow things down. Thanks. 

A home owner from Washington, DC says:
Below are pictures of the window handle that locks the windows in question. The first shows how the handle fits into the casement of the window. The third shows the plastic "construction" handle that our contractor delivered with the windows (one of which broke). The second shows a number on the handle that may help you locate the proper metal handle.
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Bob from SWISCO responded:

This looks like the handle for our 38-208. Take a look and see if you agree. 

A home owner from Washington, DC says:
I looked at the item you suggested. One question in my mind is whether the escutcheon will fit into the slot in the window. Can you tell me how wide it is across the narrowest dimension? Also how deep it would go into the slot?
Thanks.
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Bob from SWISCO responded:

The 38-208 is 3/8" wide at its narrowest point. It is 5-5/16" tall. I am not certain how deep it is, but if those dimensions and the appearance match, I am confident that this is our best match for you. Let me know if you have further questions. 

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