Some items like vases, chandeliers, and lights manufactured after the year 1986 will have this mark etched in the grooves and folds of the crystal, since there may not be enough space at the foot of the item.
Decanting separates the wine from the sediment, which not only would not look nice in your glass, but would also make the wine taste more astringent.
If your piece is truly crystal, it should feel significantly heavier due to its higher lead content.
Only ten feet long by six feet wide, the structure is dedicated to St.