Yep, it was the shoulder I was commenting on. I only have one common bar handle with the flat shoulder, ala the New Deluxe. I’ve been yelled at (not really!) for displaying a NEW Deluxe with a round shoulder common bar handle.
I can’t say I’ve come across a long comb or short comb NEW with the flat shoulder common bar handle. Doesn’t mean it doesn’t happen. Same era, and Gillette is famous for confusing us with odd combos.
Here's my recently acquired NEW LC with a flat shoulder common bar.