Terry,
After seeing your Combo Set I have been inspired!

Going through my misc bits and pieces, I have discovered the following:
A 1st Model Single Shot frame, complete plus the matching number rear target sight (serial number 19056), also includes the hard rubber target grips.
A 2nd Model Single Shot 10" barrel with a bead front sight (serial 1496)
A 2nd Model DA 4" barrel and matching cylinder (serial 91227) Has front blade sight, missing the rear latch, screw, spring and plunger.
I know a local woodworker that could make a nice presentation case.
So, I figure that finding a rear latch (plus mounting parts) and a set of standard grips, I could assemble a really "cosmopolitan" combo set…..

Don't think the Ivory Grips are in the mix and finding an engraver would really be pushing it………..
(Also appears that I might need the screwdriver...)