Once the USAF A-1s went to camo paint in the '66-'67 timeframe, the scheme was mostly unchanged for both USAF & VNAF airframes; 3-color tops with light grey undersides. Occasionally the belly colors were changed to black and subdued tail codes & serials were applied. Sometime airplanes are seen without star & bar insignia. Much of this is well documented.
I came across these photos on skyraider.org, heritageflightgeardisplays, and another online source I'm unable to properly credit. Note the darker grey undersides and non-standard black applied up the sides of the cowls. The curved black area is reminiscent of the black exhaust areas on the early COIN-scheme A-1Es, but I suspect this is unrelated.
I've heard rumors that the A-1s used to support the Son Tay Raid had special paint applied but have no way of knowing if these black cowls are related. I'm not familiar with either of these scheme changes.
Anyone have any info to share?




