I spoke with a gentlemen at JP's Corner that said their A18 fits the panda perfectly. Here is a link to a coin size chart https://www.air-tites.com/
And here is the link to JP'sCorner https://www.jpscorner.com/
I honestly cant remember where I ordered mine from.
I hope this helps!
Many thanks for the reply bandit. good day to you.
regards LL.
Louie???