The Internet shows the following information:

“In all, a total of 21,050 Bonneville convertibles left the assembly line in the 1965 model year, more than any other drop-top Pontiac, including the GTO.

Pontiac Bonneville – Wikipedia
Jump to Fourth generation (1965-1970)
For 1965, All GM “B” body cars were dramatically restyled…lines and the “Coke bottle” profile contributed to making one of the most popular styles ever produced.

Model years: 1965-1970
Length: 222.6 in
Wheel base: 124 in
Body style: 2-door convertible; 2-door hard top; 4-door hard top;
4-door sedan…

QUESTION: WHERE ARE ALL OF THE BONNEVILLE CONVERTIBLES?

The Internet showed seven convertibles for sale as of 9/28/19