With the recently introduced Case / Bose collaboration knife, there will undoubtedly be renewed interest in the humble cattle pattern knife, with its roots going back to just after the Civil War. Most were 3 blade, equal end, round bolstered knives about 3 5/8" - 3 3/4" long. There were smaller and larger knives built, but these were the typical size. Originally most had a spear main, but eventually clip main blades were introduced on many. They were also built on many different frame patterns as well, but were not very common. Some even had 4 blades.
There were even a few built with a sheepfoot or spey master. They had a spey, a punch, or sheepfoot as the smaller blades. Many had a pen blade included. Some of the less common frame types were serpentine ( which I think led to the stockman we now know ), balloon, and eureka. Some were given the prefix premier, junior, or jumbo. Some later patterns are found with square bolsters, as is the new Bose / Case collaboration. Most of these atypical patterns and versions are quite difficult to find, as so few were built in comparison to the common equal end
Most cattle knives found are generally not in the best of condition, as they were used daily,out in the weather and for many years. The Keen Kutter eureka pictured is one such knife, and is built with 3 separate springs and no liners, and is called a three spring whittler by many. All the pictured knives have been previously been posted in this thread in great detail if one cares to go back through the many pages on some of these cold, miserable winter days or nights. The clip and spear versions are pictured separately with a few familiar, modern knives for scale.