Coin This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Coining Stamping of aluminum blanks. Approximately 20 mm OD x 1.5 mm long. Comparable to a nickle or penny in U.S. currency. Buyer would like to price 1000 aluminum blanks stamped with "CRE" on top side and "CoHPer" on bottom side or below CRE stamp on front side(no quotes on stamped blank). These parts will be used as "markers" and will be placed at various USGS Benchmarks around the United States. Part Part Number: blank Material: Aluminium Material Grade: Aluminum Technical Specifications Category:Coining Dimensions0.0 x 0.0 inch Annual Usage:0.0 The following suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) provide manufacturing services for the machine tool industry, automotive industry… For more information visit www.MFG.com. MFG.com analyzes all engineered parts and RFQs for improved manufacturability and to ensure quality and a quick quoting experience. Coining: Coining is a stamping process in which the metal is compressed in a closed die. The punch compression forces the metal to conform to the shape of the top and bottom die. This process is commonly used to produce coins, medallions, tokens and labels.