Round 2? (I thought I posted this general question a couple of days ago, but it appears to have disappeared into the ether without a bubble.)
Scottish provincial town marked pieces are keenly collected by a number of silver devotees. But a few of the small town silversmiths had some of their work hallmarked in Edinburgh or Glasgow, such as the apparently prolific Wm. Hannay of Paisley, who utilized both major hallmarks at times. So would a piece with a major city hallmark have less value than a similar piece with the small town mark and, if so, by what percentage as a rule of thumb?