Here's another jack with lambsfoot secondary for you Guardians to consider.
This one is especially interesting to me as, although it's doubtless Sheffield made, it could make a claim to be an Australian traditional pattern.
It is a specialist veterinary knife, which also features a main blade shape which has fallen out of use: the "Baker's Sweep."
As Jack has noted, Australia was a big market for Sheffield bladeware, even more so after the US started to protect its local cutlery industry with trade tariffs, and this is an example of a pattern which was specifically designed for the needs of that market.
It's a pretty nice design, I must say. You all know how useful the lambsfoot is, and that needle-like point and eponymous sweeping belly of the main blade offer a very versatile blade combination. I daresay those tweezers and pick would have been very well made, too.
Sadly, I've never seen one either in a museum or a private knife collection...