Thanks Motog! I actually found that one myself when I was looking. It would be hard to hang on a bike and it’s a little big.
My guess is that it came from someone trying to sell bells for motorcycles.
You can check out this link.
They are fairly common in the Harley community.
The bells go on the frame of the bike as close to the ground as possible. They are usually about an inch to an inch and a half tall. Here is a link to a picture of some next to a quarter. Unfortunately none of these have kangaroos or Australian flags.
I was reviewing my last post when I realized that here I am appealing to the international community and using American money as the example of size. In case anyone doesn’t know the above referenced quarter is about the size of a bottle cap off a beer bottle. I am thinking beer is fairly universal.