Replacement lock on casement window

A home owner from Mullica Hill says:
I'm sorry I don't have much more to go on. There are no labels on the windows and no etching on the glass. The windows could be approx. 30 years old the House was built approx. early 70's.There is one number after looking more and that's on the arm of the window and it is 30146. I have researched that number with out luck. Hopefully you will. Thanks

User submitted a photo of a window lock.
Profile picture of Tom
Tom from SWISCO responded:
Thank you for posting. I think you might want to consider our 38-097 and 38-098 and see if you could use either of these as a replacement. If so, you may also need a new keeper to ensure that the new locks will work. For this, I recommend our 38-079.
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