Not Crusader, but of the French types from which the Crusader coins were imitations - the reverse around the cross gives the mint-city: TVRONVS CIVI, city of Tours. Reverse SCS MARTINVS, Saint Martin - this is an ecclesiastical French coin, from the Abbey of St Martin of Tours. a more legible CGB auction example.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis