Last Commander made?
Well, that's a good question!
With Gulfstream having announced closure of the line, some airframes were unsold.
The following were the last serial numbers built and I can only work from two dates:
1. When factory paperwork started
2. When the aircraft was Certificated
690C s/n 11735: Paperwork started August 27, 1984; Certificated May 13, 1985
690D s/n 15042: Paperwork started January 30, 1984; Certificated September 27, 1985
695 s/n 95084: Paperwork started March 3, 1981; Certificated August 24, 1981 (So - not a contender!)
695A s/n 96100: Paperwork started December 16, 1983; Certificated May 7, 1985
695B s/n 96208: Paperwork started June 28, 1985; Certificated February 13, 1986
s/ns 96209 & 96210 had "N" numbers Assigned by the FAA on February 17, 1984 but were never built. They remained on the FAA register until April 25, 2011 until cancelled as "Expired".
The proposed model "1200" had s/ns 98000 thru 98004 Assigned and cancelled on those same dates.
98000 would have been the Manufacturer's production prototype.