I certainly don't wish to invite controversy and my post was simply questioning that there was ever any indigenous Scottish sealing industry.
The Scottish sealing industry that I am aware of was mainly centred on Dundee and operated around Newfoundland in conjunction with the whalers from that city but I believe it became unprofitable for them by the late 1800's although whaling continued until fairly recent times.
The ban on killing seals in their first few days of life is no doubt the reason why seal fur for fly-tying became unobtainable after the early 1970's.
I assume, therefore, that any sporrans made with seal fur are from older animals and that this source too is shortly to be rendered illegal in Europe as it is already in the United States. Does anyone know the position in Canada?
Fit2BKilted mentions that adult sealskins are a valuable commodity and that the Innuit people use them for clothing which I was aware of. The question that wasn't answered, however, is are there any other significant uses for sealskin beyond Innuit clothing and sporans?