67 Emergency Brake Handle Parts

[Grizzly]

Used the emergency brake in my '67 the other day and when I got home I noticed the release button was gone. Looked all over, but can't find it. Windows were open for 2x60 air conditioning, it may have just flown out.

Anyone have a handle I could strip for parts? Seems kind of silly to pay $100-$150 for a whole unit when all I need is a $.25 piece of plastic not 1" square.

Thanks