I don't want to hijack this thread so if someone thinks I should post a separate one, please say so.
I have a similar issue with an A3000 keyboard except that I can still use the post as the post itself broke slightly and the key fell off. I don't have the key either - I got this keyboard as part of a package deal.
So if anyone knows where I could find a replacement key setup for the #1 (see pic) on an A3000, I'm all ears.
Thanks.