Personally I wouldn't consider it a slam dunk that it's PD150 ink there
are darker PD350's than the one Ronnie posted. In my opinion if it
is a case of using the wrong ink I personally think there is more evidence
that it would have been during the PD350 printing.
The two multi-strike scraps being one of the things to consider they have
150/350 subjects on the backs with EPDG and Brown Old Mill printed
over top of PD350.
http://i.imgur.com/vOj6n19.gif
pCviCcv[1].jpg