Four Naval sweetheart brooches: one with crowned fouled anchor within a wreath

Four Naval sweetheart brooches: one with crowned fouled anchor within a wreath, enamelled and stamped '9ct' and 'P.P.Ld', engraved 'M.C. BILTON 33284 W.R.N.S.'; another of similar form, enamelled and stamped '9ct'; another similar but with vertical pin instead of bar; and a bar brooch with Naval crown stamped '9ct'. [4]