He said he has been in the business since 1993 and has owned his shop at 56 Avenue A for 15 years. Konvelski said there is an undeniable recent uptick in the number of fake bullion coins, or coins ...

Authentic antique coins are often found buried or submerged, whereas replica coins will be buried or submerged to make them look more authentic. Small-angle scattering Neutron grating interferometry ...