Vintage Black Crystals and Sterling Rosaries

Vintage circa 50s-60s long rosaries made out of sterling silver, hallmarked Sterling and a maker's mark F.S.Co, with "paper clip" style sterling silver links connecting faceted black crystals, have nice weight to them, the cross and silver links have untreated rich patination, can be polished to shine, really beautiful and gently used, from a non-smoking environment, in very good pre-owned vintage condition, some expected wear/aging signs as seen in the photos, nothing major or noticeable, the rosaries would make a unique gift to a loved one! Measurements: cross 2.9 x 4.5 cm, 63 cm measured top to bottom, 90 cm black crystal necklace part.