Barb, I might be mistaken but your boat isn't a CV23, it's either a CVX23 or a CSS23.
I think the first swept windshield on the CV-23 showed up in 1981, after the CV-27 made it's day view in 1979 with the swept windshield, I hear that look was offered as a custom option, after the jet drives were discontinued, 1981, as well was the CV-23-HT, but it was still called a CV-23. I believe the first CVX-23 came out in 1985 or 86 with the swept windshield, other than a custom build, the signature series, CSS-23 in 1989, as did the CSS-19 and I believe the CSS-28, but all the CSS models had a completely different color scheme, but still kept the "glastron " look on the sides of the hull.
Believe it or not, the Glastron dealer here in Oks told me at the boat show that he bought out a Glastron dealer in Texas some years back, four semi truck loads of parts, in the purchase was included a several brand new old boats, two of them are a 1960 Fireflite with a hard top, and a CSS-28 both are brand new, never been rigged out, or ever even seen any water. and
No ! he is not interested in selling them, or even looking for any NOS parts that he may have for our old boats, including a Scimitar windshield, and something else kinda funny, Barb has probably crawled over all those parts installing the phone system in that warehouse.