Other Italian melodicas (ca. 1970) such as the ones I have been posting about have similar individual reed plates and reeds, David. I just made a comparison with a Clavietta. The individual reed plates look nearly identical; it’s a little hard to compare since the Clavietta’s reeds are mounted upside down in comparison with those of the others. But I think these are probably the closest thing you will find (other than in another Clavietta) to the reeds of your Clavietta. Most if not all of these other Italians need work before they are playable, but there are lots of them around, often at modest prices. These reeds are pretty sturdy.
Photos here, for example: https://melodicaworld.com/forums/topic/refurbishing-a-vintage-italian-melodica/