Frames, patterns & castings for 3 1/2 inch gauge Bassett Lowke 0-6-0T

I think it was the 1950s that Bassett Lowke came up with this robustly proportioned 0-6-0 tank engine - it was designed to be a powerful (by the standards of the time) club engine for beginners to build. Not sure how much Mr BL charged for his castings, but obviously enough that this builder thought it worth while making a set of very nicely done patterns.

What you see here is a set of drawings, quantity of castings - some cast iron, most in gunmetal - with a pair of part-machined frames and set of patterns.