Double shotguns:
12 bore H&H Royal, 1923
CS Rosson 12ga ble

Double rifles:
E Paton jones underlever, non rebounding locks .500 bpe, 1870's
Stephen Grant 500-450 #1 sidelock extractor, snap action 1894

Single shot falling block rifles:
Westley Richards 1897 model chambered in .256(6.5x53R) circa 1910
Holland Woodward 500-450
Holland Woodward .303 British 1896
H&H .30 Super built on a PD Farquharson 1926
Gibbs .303 Sporting rifle

Percussion rifles:
Wm Moore 14bore belted ball single barrel 1837-1844
Charles Lancaster single 20bore 2 groove winged bullet
WM and Chas. Smith 16 bore double rifle

And like any gunsmith, entirely too many projects to list......