Really ?? I would have thought they issued their own. The CASA boys always have CASA statement* and logo on the bottom ?
*Were not happy until your not happy
WIth the new card design that came in early last year. The area to identify the IB is now just a small box on the RH side of the card.
CASA have always been a basket case as an issuing body. It was marginally better when they outsourced it to Aviation ID Australia who still, according to their website, haven't figured out that the name of the responsible department has had about 4 name changes since DOTARS.
Probably not something CASA never wanted to do in the first place, much like a lot of the smaller airports who have voluntarily had their ASIC issuing approvals revoked over recent years. Unfortunately, many will now be faced with added costs associated with ID verification that is done with Australia Post. Not sure to what extent the larger airports that are IBs will pick up the slack created by this particularly for GA. I'd suggest contacting the IB on the list as close as possible to your location to see if they can assist.