I saw them a while ago. May have been before the Mark VII came out.
Mesa revised their cabinet range and that is when I saw the 410 cab. Same width as the wide body. Just a little taller, more of a full square shape. The Filmore line has one too, but I do not see that on Mesa's website. It does show up on Sweetwater.
https://www.mesaboogie.com/en-US/Amp/0.B410.AB.G10/0-B410-AB-G10
Mesa revised their cabinet range and that is when I saw the 410 cab. Same width as the wide body. Just a little taller, more of a full square shape. The Filmore line has one too, but I do not see that on Mesa's website. It does show up on Sweetwater.
https://www.mesaboogie.com/en-US/Amp/0.B410.AB.G10/0-B410-AB-G10