Thanks for all the replys, guys. They're all very interesting and informative.

I'm afraid, however, that my original question is still not answered. The version that Craig refers to in his reply as "#650 version A -- Non-chrome NC and clip-tip fins" is the one that I have never seen except in Estes photos. Companys often use prototypes for product photo sessions and I'm wondering if that's what happened in this case.

So, was this version actually produced or did it only exist as a "fashion model" for the catalog and kit face card insert photos?

Thanks.

Mike Fields