Light friction rubbing or scuffing which is different from hairlines and bag marks
Light friction rubbing or scuffing which is different from hairlines and bag marks Sometimes referred to as "cabinet friction" because many times it is caused by a sliding action in a coin cabinet
Area(s) of a coin where a foreign object or another coin has displaced metal in an abraded fashion Similar to a bag mark but usually on the high points or open fields and not as deep or acute as the former
Light marks or scuffs on the metal surface generally caused by handling or packing materials
The wearing, grinding, or rubbing away by friction Abrasion is usually due to the presence of foreign matter such as dirt, grit or metallic particles in the lubricant
a general wearing away of a surface by constant scratching, usually due to the presence of foreign matter such as dirt, grit, or metallic particles in the lubricant It may also cause a break down of the material (such as the tooth surfaces of gears) Lack of proper lubrication may result in abrasion
marks or small scratches on the surface of a coin where another coin or object has slid across or bumped the coin Can also be caused by the coin sliding in a holder or coin drawer Not as deep or noticeable as bag marks Usually found on the high parts of a coin or in the open fields (background)
General wearing of a surface by constant scratching, due to the presence of foreign matter such as metallic particles grit, or dirt in the lubricant It may also cause a break down of material (such as gears tooth's surfaces) Lack of lubrication may result in abrasion
A form of mechanical weathering that occurs when loose fragments or particles of rocks and minerals that are being transported, as by water or air, collide with each other or scrape the surfaces of stationary rocks
The wearing away by friction As rubbing against another surface can damage glass filaments, they are coated with a size to prevent filament breakage during manufacturing and further processing "AR" Glass : See Cem-Fil® Assembled roving: A collection of parallel strands assembled without intentional twist (according to ISO/DIS 13922)