Of the three types of CK-2777, this is the so-called FA-arrow. These are dials that the MOD used to replace the original radium dials (called THIN-arrow) and produced by `Mr Davis in the UK, circa 1956. Only few radium dialled thin -arrows exist. The third type are those using NOS Omega dials, with empty luminous - which have been however filled with SL prior to usage in Bienne restorations (see image) Bws Franco
