Hello, I was wondering if somebody could help with some old looking coins we found, from looking on the internet they look like crowns from that period but the weights and sizes are diffferent. http://i41.tinypic.com/2a9vgb7.jpg http://i40.tinypic.com/21evmg5.jpg The first coinx 31mm diameter and weighs approx 10g. 1-2mm wide nothing on the edges the second coin is 26mm diameter and weighs approx 7g.1mm wide nothing on the edge. I was wondering if anybody could help me identify these coins. many thanks