BSG.CS.00610 — Cloth Seal, Cloth Worker's Personal Seal, Privy Mark, 4xx, TM, 1500~1825

Found on Thames foreshore, 20mm, 6.0g.

Privy mark based on figure 4 with T M to sides of elongated vertical resting on joined XX // 17 scratched / 129 stamped (raised letters)

A standard two-disc cloth worker's personal seal.