hi tom
the 70s have
plasticoat or
plasti kote.
the original walb' product was intended for THAT coating...
see post #13 and #27 and beyond in this thread...
http://www.airforums.com/forums/f441...ize-31480.html
and here
http://www.airforums.com/forums/f441...ish-38545.html
looks like '
superseal' is the first choice, with
cleaner, polish n glaze for naked skin streams...
because the older
plasticoat was soft and HIGHER in plasticizers...
a modern 'vinyl spray' might also be useful, at least it will be SAFE on the old coating.
vinylex made by the lexol folks is a good example, but ANY of the older style vinyl sprays may work.
_________________
the "hand prints" seen may actually be residual SOLVENTS or grease/oil stains...
IF they've soaked INTO the old finish it's possible they will be visible till it peels...
cheers
2air'