Harold, I cannot vouch for 16 ga but with 12s you can tell them apart just by looking at the plastic tube. The HS hulls are smoother and shinier than the old which are a more mat finish and feel slightly wavy to the touch. Additionally, some of the early HS hulls were head stamped as such. Once you get the hang of it sure beats looking down the tube for a base wad.

I bought a flat or two of older WIN 12 gauge 1 1/8 and 1 1/4 ounce field loads (Upland and or Expert hulls) last year . They're in the unibody all plastic hulls as well , they'll be turned into 1 1/4 ounce handloads with #6's sometime this summer I assume . They should work well for Allgoods sky high pheasents .

The pile of older 16 gauge had these three hulls which I lump into the older AA style and they’ve not made in a number of years .