Brand new, sealed. MGO 515 UMF 15 With no heat treatment and no fine filters, Steens® Honey - uses proprietary crushed whole comb technology™ with only the wax removed providing pollen & bee bread in every jar. The UMF™ rating system independently certifies natural components found in Manuka Honey to assure potency, purity, authenticity, & freshness. MGO is a mg/kg content measurement.