Gas welds or not, Carl
What is your guess - GM factory, or, not?
Are there any records whatsoever that GM ever made a humpback? If not, then it would be plausible that the hideous gas welds in those pictures would be period correct for a coach builder for that time period, and likely authentic, though not by GM.
Now if you want to see some hideous factory gas welds, take a look at those on the frame of a late '50s/early '60s Thunderturd.
Carl
