Key help

[gatorblue92]

I'm in the process of trying to get a second set of keys for my 280E and having a very difficult time. My ignition was replaced at some point in the last 5 years and the PO had a ignition from a later W123 installed which my dealer said has a tumbler that is different from the early style that should have been in that car. I would love to have only one key for the 280E but I don't really feel like spending upwards of $300 to get the whole early setup. Does anyone have a source for the correct key blanks which I can take to a local locksmith to cut?