I've got a couple to add to the list... Maybe not totally ugly to some, but definately weird looking
1908 Bayard-Pieper
1907 Clement
CZ-38
H&R 1916 Self-Loader
1898 Rast-Gasser
1883 Reichsrevolver
1905 Steyr-Mannlicher
1913 Warner "The Infallible"
1910 Frommer (haven't added this one yet, but looking for one)