Model # for an Edwards key

Does anyone here know the model number for an Edwards 270-GAO (two-stage pull station) key that activates the general alarm? I’ve been trying to look all over ebay and the internet, came across some Edwards keys, but didn’t know if any of them were the right one.

I think the Simplex annunciator key will work in those pulls too – IDR if the key switch is different for the GA like Simplex does, but on my Edwards coded pull the “GA” switch works with the Simplex key.