Κ Kappa (cap-pah) Λ Lambda (lamb-dah) Μ Mu (mew) Ν Nu (new) Ξ Xi (zie or zee) Ο Omicron (om-e-cron) Π Pi (pie) Ρ Rho (roe) Σ Sigma (sig-mah) Τ Tau (taw) Υ Upsilon (youp-si-lon) Φ Phi (fie or fee) Χ ...

The cross dates to between 1450 and 1550 and its shape, like the Greek letter tau, is associated with St Anthony of Egypt A silver gilt pendant worn to ward off a "widespread" medieval disease ...