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What Injector type is this?

Somone sent me this picture letting me know they have this Injector for sale. However this is the only picture. Anyone able to tell year or type?
That's what I thought, but I couldn't confirm without the serial #. Thanks. If the price is right this will be my first Injector. What's the best blade to use? I've heard people cut down Feather Pro Supers, but that sounds like a pain.