Documentary images — company attribution uncertain
image by Klaus-Michael Schneider, 11 Apr 2009
Schneider’s H620 FOTW flag has a black upright lozenge containing a white “H”, overlaid by a red “J” twice its height. Rosanoski confirms that the source lozenge is taller, while warning that other proportions are uncertain. Mitchell’s H619 funnel is unclear, showing only the diamond on its flag in black. Rosanoski suggests that the “J” referred to Johann.
Initials do not prove legal identity or father/son succession.