Is This Moist?

I have recently acquired a belgium collection in a Lindner Vazlos album. A very nice album I think.

I am however unsure if there is moist between the plastic sheets. Whenever I press the plastic sheets together I can see some sort of pocket which looks like moist to me. However if I use a paper towel between the sheets I don't see any moist on the paper towel, and the "moist" pocket reappears afterwards. In the bottom of the picture you can see the pocket I am talking about. I hope some of you have experience with this.


Any advice is appreciated.

The plastic top sheet is sticking to the bottom layer. I will come up at the slightest touch. It's not moist, it happens all the time.

I may be wrong, but I think it is more like air pockets, if the plastic on the page is double sided.

Thank you both for your replys. I am happy I don't have to remove all the stamps :-)