How To Store And Display Currency

I don't collect currency or stamps really, I have only a small amount of each.

However, I would think Mylar sleeves would be the way to go. I note that valuable stamps are stored this way. Mylar sheet is tough clear and inert. It's also used as the base for Australia's 'plastic' notes.

I do not think that I have seen a really an outstanding way to display currency notes. The best I have seen is Mylar sleeves in a ring binder.

thai-vic: That is about the best ring binder approach that I have seen so far.

Perhaps Mylar would be best within your system for your more valuable notes.
Polyethylene I guess would be better (because it is cheaper), for less valuable notes, and maybe OK as well for the more valuable ones as well. I have no information of the long term storage viability of polyethylene, but to my logic, it should be OK.

As you live in Thailand, I appreciate that you MUST protect your notes from excessive humidity, and so all notes need to be protected from it.

Perhaps the whole of your collection could be stored in a large air tight cabinet with silica gel to keep the air dry within the cabinet.

Another problem with high humidity is acidic sweat from our hands. Handling notes that remain in transparent protective sleeves is the coin equivalent of 2x2 coin holders or airtight capsules.