I am not an Ithaca collector. I do collect early, Damascus barreled American maker SxS, Parker, Remington, Lefever, Ithaca, Smith, etc. Mainly lower grades accustomed to the woodcock covers, and usually in need of rescue from abuse.

I came across this Ithaca Lewis two barrel set, 28", 32" with original case at a LGS and added it to my set. My understanding is that Ithaca added the bolsters to the late Crass and then Lewis models, not out of any design flaw or engineering concern for cracking but as an accommodation, perhaps marketing ploy, to the growing preference for smokeless powder shotshells. I do not know the fact of this. I do know I like the look these added to the frame.