Museum seals in Helsinki

My husband an I visited some museums in Helsinki, and the receptionists of each museum gave us a seal as proof of payin fee.

Sometimes we have found many museum seals putted on a pole near each museum.

If there are a few seals, they are disreputable but because that there are so many seals, they look like to be appealing their fashion, so we added our museum seals to them.

Is it interesting?