Dave Pomeroy featured a Cutlass I in BP magazine in January 2008 in a Retro-Rama column. He says estimates vary, but as many as six hundred Cutlasses might have been produced.
I bought my Cutlass II used in 1994. It has been my main player since then. Mine has aftermarket Bartolinis and a Hipshot D-Tuner and missing foam mutes but otherwise appears to be original.
It is VERY hot in 3 of the 5-way switch positions. The bridge pickup soloed sounds a lot like a Stingray, while the neck pickup sounds much more like a P bass. I often use both pickups together which sounds very thick, rich and full (not scooped like a jazz bass).
The other 2 settings on the 5-position switch involve single-coil bridge, and single-coil bridge with both neck coils, but I don't care for those 2 settings, which are thinner sounding with less output.
It has excellent sustain and brightness, even with flatwounds. It has more than one setting that sound fantastic for slap with roundwounds.
The neck width at the nut is about a "B" width -- halfway between P neck and Jazz neck, at 1-5/8".
There is no truss rod, but it does not seem to need one at all. The minimal-relief neck has remained stable for me at any string tension. Right now I have D'Addario Chromes Flatwound Mediums 50-105 on it, which is a very high-tension string and I have the action very low with virtually no buzz. I think I like it best with flatwounds.