I had good luck with
Keys 4 Classics in Australia. I gave them the key code, they sent back an ignition key that worked perfectly. You know that sticking you sometimes get with a copy of a key? None of that. It's better to get a new key cut to the code rather than to copy an old, worn key. The blanks aren't NOS Alfa blanks, but they look okay. I had them make two ignition keys for me, one that I use for the car and the other that will be a model to copy from should I lose the "in use" key or if I get anal and decide to get new keys made on NOS blanks.