The Wealth of Nations by Part 2 Chapter 2 Page 54

was frequently obliged to purchase gold bullion at the high price of four pounds an ounce, which it soon after issued in coin at 53 17s.

10 1/2d. an ounce, losing in this manner between two and a half and three per cent upon the coinage of so very large a sum. Though the bank therefore paid no seignorage, though the government was properly at the expense of the coinage, this liberality of government did not prevent altogether the expense of the bank.

The Scotch banks, in consequence of an excess of the same kind, were all obliged to employ constantly agents at London to collect money for them, at an expense which was seldom below one and a half or two per cent. This money was sent down by the waggon, and insured by the carriers at an additional expense of three quarters per cent or