I also concur. Only exception is I believe a drum cannot be a prototype and first generation at the same time. Law of superposition doesn’t support it. If the seamed aluminum hoop orange peel is the prototype then this preserial, seamless, crimped bed, COB hoop, red muffler, bowtie lug Acro I pictured would likely be next in line, aka first generation. If the orange peel was the first generation then my drum, likely more rare, would be the prototype for the seamless Acrolite as we know it. It’s also possible that both are prototypes. Of course I’m invested because I own the drum and hope maybe language will shift to acknowledge this drum. As far as the OP’s drum, it looks like a nice Acro example however it’s not the same drum shown here so clearly the seller doesn’t have the correct info for you. Although the badge is higher in ‘68-69 that batter head shouldn’t touch cover the top of badge. This can happen with Remo heads because of the deeper collar when compared to Ludwig Weather Master. With that, there could be batter head rash that may become exposed if you go back to what Ludwig intended, a shallow collar. I gather the is likely bowed and would no longer lie flat without some adjusting.
There were two types of Acro's with the welded orange peel shell. The earlier had small knob muffler and Imperials. I think most have standard triple flange hoops. Mlayton has or had one of these.
The next one has the baseball bat muffler and bowties. There are supposedly bowties that are aluminum. Others have the same die cast lugs as on production acros but with a brushed finish. I have never seen an aluminum bowtie so I can't comment on that but my welded shell acro
has the brushed die cast lugs. I also have a '66 or so acro so I took a lug off each and they are 100% identical other than the brushed finish which is a brushed finish applied to a chrome lug. All of the makers marks and other details are the same.
In '62 Ludwig put out a flyer for the new Acrolite. The copy says that the hoops are the same acrolite material. In other words aluminum.
[IMG]http://www.vintagedrumguide.com/images/nard/bulletins/1962-nard-4.jpg[/IMG]
In the '62 catalog they have another description for it. The picture is clearly an orange peel shell and still says aluminum hoops.
[IMG]http://www.vintagedrumguide.com/images/ludwig_snaredrums/acrolite_flyer.jpg[/IMG]
The '63 catalog still identifies the drum as having aluminum hoops.
[IMG]http://www.vintagedrumguide.com/images/ludwig_snaredrums/1963_Ludwig_acrolite.jpg[/IMG]
The 63/64 catalog is the first mention of a seamless acrolite shell. No longer comes with aluminum hoops.
[IMG]http://www.vintagedrumguide.com/images/ludwig_snaredrums/1963_LUDWIG_SNARES4.jpg[/IMG]
My thoughts, and Mlayton's, at least at one time, is that the prototypes were the imperial lug versions. These are much harder to find and fits the 100 or so made story.
The first gen are the bowtie versions with aluminum hoops and baseball bat muffler. These are rare but not that rare.
The second gen are the first models with the seamless shells. The earliest one had crimped beds just like the early aluminum supras had. This was very short lived and they soon went to the non crimped beds that we all know.
So my opinion is that your drum is a transitional drum because of the beds and that it is still quite rare but not a prototype.