'The Bargain of anc. Coins was offered me by ye son & heyr of Mr. Harrison somet.{ime} schoolm{aste}r at St P{au}ls London. Q. how many Ounces of Gold, & how many of silver peeces.' (Oxford, Bodleian Library, Sancroft MS 18, f.12; Boran 2015, vol. 2, pp. 533, letter 327; Burnett 2020b, p. 256)