A sign of maturity Philb, is the ability to disagree politely,
and I see no problem if you discard.
I would never do that personally, as I have had great joy
in collecting absolutely disgusting stamps from India
that were "theft prevention" cancellations.
I would have thrown them out ten years ago.
Someone I very highly regard, recently told me that they felt
no obligation to keep or maintain covers for posterity,
that they paid for them, and they can do what they like with them.
I respect the fact that they can show honesty with me, and
to debate the fact would jepoardise that.
We all have our standards.
I remember once asking whether I should break open a common as muck multiple, and Tony Macg suggested to always leave intact and let someone else make the judgement.
I have adopted that regime as well.
I am also reminder of the occurence of the NZ invert
(mount something or other) that was very badly cancelled,
if some novice had thrown that at the outset, we may not have it now as proof.
How does one know that common old Machin may have a scarce tagging?
