After 25 to 30 years the breakdown is normal.

See posts here from Monaco that I mentioned to you.

Must also be away from any heat. The 30--year-old stuff is now too old and weeping.

The older BG with older border is not safe. Read posts of plaque finds.

Too much is being tampered with to remove warps.

I constantly alert the community and the practice of storage does not change.

Every measure is archived here.

I sent over 1200 ietons to flea markets in De, Fr and Es in exchange and they do not even want it.

Knowing the exact composition is the only way to go.

I showed the Belgian plaques here that bleed, twist and break apart such as the Namur I sent you.

I sold a Madrid in Japan was perfect and now completely destroyed.

Keep an eye on Oostende 25,000Bef lunette.

No more plastics for me unless very old Celluloid type composition and stuff we know that had not changed shape since 1947.

Most important do NOT wash with water.

Read Thomas C. Day notes about wash damagel