Thanks for all your help w/ Inscriptions, etc...and for the 3-D Bread and Loaf.
Would the top inscription in your post be considered a Serekh?
Campbell's Chamber roof blocks are Tura Limestone until proven otherwise.
THE Cartouche in Campbell's Chamber IS Authentic, as are ALL other RC's Glyphs, until proven otherwise.
"This Forgery 'theory' has more holes than a sieve basket."