Hey Welcome to the CRG!
Sounds like you have 2 nice cars. We encourage to post pictures of each car you have, and motor shots if possible.
Regarding how many RS convertibles were made. I think we can narrow down how many convertibles, and how many 69 Camaro RS cars there was in general. I am not sure GM kept that good of records to say specifically how many convertibles had the RS option.
So there were 243,085 1969 Camaro produced
37,773 1969 Camaros had the RS option, (which is about 15%)
17,573 1969 Camaro convertibles produced
So 15% of 17,573 Convertibles works out to about 2,730 1969 Camaro convertibles with the RS option.