I doubt if Monty Mondarino has any of his muzzle loades to display. I think I know who bought most of them and I'ts doubtfull anybody will ever see them in person again. What Don says is true, what ever he does you can bet it will be very hard to find better or equal quality. I would guess he might have some modern guns he has done . When you build high art stuff it has a tendancy to burn you out faster than usual. It's a high stress game. Monty indicated to me that he was kind of at that point.
Skill doesn't rub off it's earned, learned and refined.
When you look at something that seems humanly impossible to do, don't say to yourself, I could never do that.
Just say, I haven't learned that yet.