I would agree with a production total near 300. The same basic design was used for model years ’86-91. At that point, it seems that Car Craft vanished as part of the S+S Coach/Superior Company and they appeared to focus on limousines and hearses. They are now part of the Accubuilt Company. I checked with them a few years ago and they own no records showing build counts.
Car Craft was associated with Hess & Eisenhardt (same company?) and when the H&E name was sold off in ’85, the company continued to build their convertibles as Car Craft.
Here is a listing of DeVille convertibles I have found with model years they were built:
Hess & Eisenhardt (LeCabriolet)(78- 83)
American Custom Coach (Paris) (77-79)
DeVille (4dr Conv) American Custom Coach (Paris) (78)
Car Craft (78)
Bill Hines (78)
Car Craft (86-91)
Coach Builders Limited (89-91)
See my article here:http://en.wikipedia.org/wiki/Coach_convertible
If you have any info to share with me, please send me an email at kcdesoto1(at)hotmail.com