[Collins] 312A-1 Speaker

[Fred]

I was fortunate enough to come across a 312A-1 speaker a few months ago which I will be using with my Aline receivers, but it not complete.  It is missing the front metal grill and the terminal cover in the back.

I would like to make it complete so i am wondering if anyone can tell me of a source of some kind of replacement for this
Thanks for any and all suggestions!   73's....Fred