Former USAAF 44-35870. Registered as N1471V in 1954 then N320 in 1955. Rebuilt as an On Mark Marksman in 1960. Seized by the US Customs at Homestead FL for gun running in 1974. Reregistered as N99426 in 1977. Used for clandestine anti-drug ops in the Caribbean. Sold in 1980. Painted as 595924/69 for the film The Hustler. Damaged at Tamiami, FL by Hurricane Andrew in 1992 and stored there. Shipped to Caboolture, QLD Australia in 1998 then shipped to Van Nuys, CA in 2000. In too bad conditiion to restore and stored at Thermal CA. Also reported as stored at California City, CA.

Marksman conversion #5 of just eight, a true gem saved by the Drakensberg Truck Manufacturers owners from further decay at the SAAF Museum, that lacked funding for this non-air force aircraft. High-speed civil executive Invader conversion, pressurized and fitted with DC-6 flat windshields and cockpit side windows. Originally A-26B 44-34567, to N9412Z in 1960 with On Mark Engineering at Van Nuys, CA. As ZS-CVD to the Iron & Steel Industrial Corporation (ISCOR), 1962 to 1976. To the SAAF Museum in 1977 after engines had been sold separately. Brought here in 2010 and reassembled in 2018, still in the same livery as with ISCOR.

Built as A-26C Invader 44-35870. Converted in 1962 by On Mark to Marksman C with deeper pressurised fuselage with up to eight seats for executive use.

Built for USAAF as 44-34761, but not delivered. Converted in 1961 by On Mark Engineering of Van Nuys to Marksman C standard including deeper pressurised fuselage with revised cabin roof. Fitted with 2500 h.p. R-2800 and wingtip tanks. Carried up to 8 executive passengers.

Former USAAF 41-39221. Converted from A-26 Invader to On Mark Marketeer executive aircraft during the early 1960s. In the early 1980s this was used as an engine testbed, with a turbine engine mounted in the nose. Became N26GT in 1983 and eventually donated to the South Mountain High School in 1992. Still on outdoor display there in good condition 30 years later, in September 2022.