25 - Air-Tite H39 (39mm) Direct Fit Coin Holder Capsules for 1 oz Silver and Copper Rounds

How about Britanias? 2023 that are 39mm?

Is there a trick to opening the capsules after they have been closed?

Will these fit a 1 oz silver krugerrand?

Do the capsules no longer come in a box? I use the boxes to store my encapsulated rounds and my order came without the boxes.