I needed another key for my SHAD luggage set (lost one - what an idiot!) . Googling uncovered that SHAD don't sell keys cut by number or key blanks, just a new lock set and two keys.
I took the top case to the local locksmith and he eventually found a key blank of the right size:
Key blank - SILCA NE26 fitted (Italian). Two new keys were cut against the original, they needed some fettling with a file but eventually they worked smoothly.
This saved £6 and plenty of aggro over buying and fitting a new lock set.