I think I have a Heineken round font badge at home if you want it ? PM me.
They are raised silicon type badges that come like a sticker. You just peel them off the sheet and stick them onto the round metal housing on your font.
There is a place here in Perth, www.beetech.com.au that sell the blank plastic disks, stickers, and decals already made up. Various brands and conditions, about $5 each for the plastic disks.