Those three letters appear on the tombstones here in Banica and it means "En Paz Descanse." (In peace may he/she rest.)
Today was the funeral for Rosa Emma Carbajal, whose nickname is "Mason." She was 98 years old, very devoted to the Blessed Mother, and was receiving sacraments regularly (including anointing of the sick the day before she died). She died on the Solemnity of the Assumption - probably not a coincidence.
Photos above show the procession from her home, then to the church, and then finally to the cemetery. En paz descanse.
