The age of the coin...no. Wear will affect the weight. A Dollar coin will show more of a loss of weight in vg, than a smaller cent in vg. But who really knows what they weighed when they were minted? We have a rough idea at best. I save all my copper cents and weigh my 1982's to sort out the zincs. The stated weight of 1982 coppers are 3.11 grams. I've found them to weigh between 3.13 grams down to 2.98 grams. None of them show enough wear to justify that much of a difference. The planchets had to be light to begin with. I could only imagine that it is possible for larger variances with larger sized coins. One thing for sure though, the farther away from the targeted acceptable variance...the more cautious I become.