Thanks for that very interesting and I will add the stapling information to my listing because as you say it might create more interest. I think it would be an interesting piece to own for someone who collects glass of this period and although it may not fetch much every penny counts where charity is concerned.
It certainly feels old, it is not like any other decanter I have seen which were most probably machine made this seems to have been crafted but then it's all guesswork because I am basically clueless about glass of this age.