An RBL of some iteration immediately comes to mind. Should that not quite suit your fancy then I would look in several other directions:
1) an SKB 100, stripped of both its wood and finish, then stocked to your liking and the metal w/possibly some minimal, but well executed engraving also finished to suit your taste. note: There are members here who can do that work & do it very well.
2) a BSS or any one of several iterations of Miroku's that can be given similar treatment as noted above. Early guns oft carried good hand engraving.
3) a Webley & Scott
4) a Flues Ithaca, [perhaps graded #1 or #1 & a half] restocked and refinished to suit you. They are neat lightweight, attractive and quite serviceable guns. Too oft overlooked, IMHO.
You will notice all are A&D variant BL's. All are also well proven as durable in the field.
