The existence of the five Syriac Apocryphal Psalms has been known since the eighteenth century. Psalm 151 was included in the Septuagint. whereas Hebrew versions of Psalms 151. 154 and 155 are part of the Psalms Scroll found in Qumran Cave XI. https://herbsdailyes.shop/product-category/sharps-collectors-brackets-and-cabinets/