I've tried to enhance/crop several images in order to ID the guns - all the originals are unfortunately low resolution and low size. The originals date to 1885-1887.
All opinions are appreciated.

#1 is interesting - appears to have side clips and sculpted breech balls

[Linked Image from photos.smugmug.com]

A different sidelock and the lockplate and pins are fairly clear

[Linked Image from photos.smugmug.com]

and if the same gun, looks to have the Scott FE lever

[Linked Image from photos.smugmug.com]

Another sidelock

[Linked Image from photos.smugmug.com]

https://sites.google.com/a/damascusknowledge.com/www/home