Who Made These Planes?

Here are four bullnose infill planes from the late 19th to the early 20th century: the oldest on the left is by Holtzapffel & Co (1828-1922); the two in the middle are by Norris (1872-1943); and the one on the right is by Arthur Price (1924-1967). All three companies were London makers. Bullnose planes are not that useful in a shop, so all of these planes show very little wear. The Holtzapffel plane does not have a steel sole for wear (planes without steel soles are less common that ones with steel soles). The two Norris planes are essentially identical, with the only real difference is the width - 1 1/8 vs. 1 1/4 - and wedges - one has a rosewood wedge and the other one has an ebony wedge. The plane with the rosewood wedge has never been ground and has just been honed a few times. Who Made These Planes?We know what brands the planes are stamped with. We also know that Norris didn't have a foundry. At the very least, someone else did their castings. Or did they buy castings from one…