all the reasons. My problem, my scale, I think (its not a bmw but not a junk yard dog either) rarely weighs exact to the mints specifications. Example 1> I just re-weighed a 1943s "STEEL" Penny- mint weight supposed to be 2.70g, mine weighs 2.84g. Most of my coins are only off by a couple of digits ex2> 2.50/2.53 or 2.70/2.68. I regularly calibrate my scale in fact before any and every weigh in. It weighscorrect with a weight. My question is this.. How close to exact mint specs. does a coin need to be? Please do not factor in wrong planchets, I already have. More like if a coin left the mint in hypothetically mint perfect condition would or could the weight be of by 1-2 tenths. ex3>2.50/2.52? or if its in "mint" condition would it weigh exactly 2.50g. Question2> Do i need a new scale? Thank you in advance for any help. And thank you also to the 2 people who wished me Happy Bday a couple weeks ago I was surprised to see the well wishes. Dont worry folks if you missed my bday this year I will be having another next year. Thanks Again. .