Beaver Hats

On the subject of beaver hats, I would ask what was the price or value of a beaver hat in the time of Charles II.? I find that Giles Davis of London, merchant, offered Timothy Wade, Esq., "five pounds to buy a beaver hat," that he might he permitted to surrender a lease of a piece of ground in Aldermanbury. (Vide *Judicial Decree, Fire of London, dated 13. Dec. 1668. Add. MS. 5085.* No. 22.)