Thanks so much for that, Pavane. What a gold mine! Being a harp player, I was intrigued to see harp strings named among all the various music wares on sale in the charming advertisement at the bottom and along the sides of the broadsheet. Quoted here (mis-spellings are in the original):

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Printed by T. King, Birmigham, and sold by Mr. Green, at his Music Stall, near the Turnpike, City-road, and at 27, Featherstone-street, City-road, where an extensive collection of old and new songs, harp and violin str, fancy stationary, &c., may be had.

Violins, Accordians, Harmonicas, & Concertinas sold & repaired.

Instruments bought, sold or exchanged. Fancy Walking sticks   Toys