Thanks!
I have volumes on the US SST program, the bound submissions to congress and FAA with data from both Lockheed and Boeing, most all NASA, Langley data, and other documents as well as a number of original blueprints and line drawings, only these models perplex me as I know the one style was PacMin. but I have no idea of the other earlier one. I probably need to post these on a diecast forum or something.
Here are a few more of the bulged and the lower strakes...

Please please, post if you have more