They're pretty good aren't and last for around 6-7 year's, until you pop into local warehouse and they're in the bargain section,G10 on the label but they don't reach properly as there's something wrong in 5design!
Lovely mate, what day's off are designed for, probably something starch based I'd assume if it's.that old,if you're wetting it it'll take a a few lashings of water.