Canada Post Packaging - Safe For Long-Term Storage?

Good morning, all! This may seem like a bit of a rookie question, but I can't seem to find any information on the subject.

Recently, Canada Post has started to "package" many of their special stamp sheets in what looks like a cellophane-like material.

Does anyone know if Canada Post's packaging is safe for long-term storage (acid free, etc.)?

I'd like to leave some of my newer acquisitions "sealed", but only if this will not impact the long-term quality of the stamps.

An example of the Canada Post packaging is below.

Any information on the subject is welcome! Thanks -MB

I know this is really not an answer but I have some Canada Post material dating back to the 1970s. I have opened some of these recently and have found no damage to the stamps. They don't seem to stick to either the clear plastic or the card backing and the card shows no deterioration. I also have some CP packs which were opened many years ago with a similar lack of problems.

And welcome to the Forum. I joined last fall and have had a lot of fun and, I guess, more importantly have learned a lot.

Ask Canada Post since they may know best about their stuff.

Finally managed to sneak in some time to contact Canada Post via Facebook. Huge credit to the Canada Post Social Media Team... they took the time to find an answer and respond in a timely fashion.

Here was their response to my question above:
"Our bags are bi-orientated polypropylene bags and unfortunately 'not safe for long-term philatelic storage'. They are not acid free, and the team said that lighthouse pages should be safer."

Question for everyone on the forum: how are you storing these special issues? Are you removing them from their packaging, given the above? Does a "sealed package" promote a higher resale value, in your opinion?

Welcome blastofffireworks..Keep posting my friend.

Robert

Thanks, @wert!

My collection is much more limited than many here on the forums... today, I collect only souvenir sheets and special panes.

I've always had an interest in stamps (used to collect corner blocks as a kid), and I also collect Canadian circulated and non-circulated coinage, and poured silver specialty bars. For me, stamp collecting has both pros and cons...

Pros:
- relatively inexpensive
- all stamp issues tend to have a historical relevance, which equates to engagement and learning
- Fewer issues than non-circulating coinage = more enjoyment & less pressure
- if all else fails, stamps can be physically used (unlike a bad purchase made with non-circulating coins)

Cons:
- The collector market in Canada seems to be smaller and more specialized than with coins
- I've found it hard to connect with fellow collectors in my stream (souvenir sheets / panes)

Getting back to the topic at-hand, I'm extremely surprised that Canada Post has packaged their collector stamps in non-stable materials which are not suitable for long-term storage. They have done such a good job with "packaging" these special panes and sheets, that I hate to open the sealed folders and remove the contents.

How is everyone else displaying these items in their collections (or am I the only one who sticks to relatively "tame" souvenir sheet / special pane collecting)?