"I have recently bought one of two 250SI which were delivered as such by the works, chassis number #2431. The other car was #2432. Both cars were sold to to Jim Hall/ Carroll Shelby in January 1958.  I am looking for race and ownership history and pictures. ANY help would be appreciated." 

I'll forward any info or photos to Dr. Zweifler.

Here's a look at Tom Price's beautifully restored 250S #2416 in action at the 2005 Monterey Historics.

Here are more of Dr. Zweifler's photos of #2431.

Dr. Zweifler also owns Maserati 200SI #2412