Grille material for big Valencia cabinets

[iconicmn]

I have a very nice pair of Iconic Valencias from the 1970s; over the years, the plastic grille material has cracked, chipped, and otherwise fallen apart. I'm not married to an exact replacement, but is there a source for this stuff or a reasonable look-alike?

[sonofagun]

http://www.audioheritage.org/vbullet...lencia-grilles

[altec3214]

I have grills for tha Valencia, on the bay.