The bed shown in the fourth pic is definitely a Federal design, the bed in the fifth photo I'm not sure about, in fact I can't remember where that coehorn is on display, nor what the brass plate on it says (maybe someone else knows); but in either case, at least that bed is known to be a valid Civil War model, because it is shown in the C-W period photograph of surrendered CSA ordnance at Appomattox, Virginia. There is also proof in that picture of a bed that holds a Federal type coehorn, and it has smooth curved shoulders on the ends instead of the more complex molding seen on the bed in the fourth photo; this is the only example of this design that I've ever seen.