I'll add my vote for the separation of the glass layers.

As for this being only on MB - just visit any salvage yard with early 1970's vintage or earlier cars - you'll see lots of it. In fact, if you go to a lot of car shows, you'll even see it on some vehicles that aren't yet fully restored.

Just my .02
jlc

__________________
Jeff

'87 560SEL 267K (177K on motor) Blue/Blue
'98 Buick LeSebre 60K (wife's car)
'56 Imperial Sedan 124K
Past Cars:
'67 Dodge Monaco 130K (Sold)
'87 Chrysler 5th Ave 245K and going strong (sold)
'73 Plymouth Satillite 175K (sold)
'96 Chrysler LHS 80K (totaled)