Yet another Caselli question

[Flat freak]

I recently pulled these parts / V drive mounts / strut support/ upper rudder support out of a very early Kurtis flat bottom. I just happened to notice the parts looked just like some of the parts Caselli had pictured in his flyer of parts he sold. My question is, did he have these cast himself? Or were they available from the likes of Nicson / Glenwood as well? Might be worth keeping if they were his stuff.