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<p>[QUOTE="zumbly, post: 2925209, member: 57495"]The coin is 3.8g. My understanding of what I've read is that the adjustments were 'al marco', to correct the weight of a quantity of metal had been used to produce a number of coins, rather than to adjust the weight of specific coins. So, the coins picked for adjustment might have been random, rather than strictly the overweight ones.</p><p><br /></p><p>Edited to add this paragraph from Andrew McCabe in a Forvm discussion about Stannard scoops: </p><p>"The very definition of al marco means of course that light coins were as often scooped as heavy ones. They only weighed batches, never single coins. So you could get an underweight coin being made even more underweight! But the entire batch would start heavy e.g. weighing about 4 grams average, hence even the underweight coins in the batch would on average be slightly heavier. How did they make the slightly heavier batches? Probably by eye and experience. One batch of 100 coins might weigh 395 grams, the next 403 grams the next 391 grams etc. All that mattered is it weigh at least the official norm of 389 grams. Then they scoop coins until the batches get to 3.89 grams average. Of course the scooped out silver gets thrown back in the pot."[/QUOTE]</p><p><br /></p>
[QUOTE="zumbly, post: 2925209, member: 57495"]The coin is 3.8g. My understanding of what I've read is that the adjustments were 'al marco', to correct the weight of a quantity of metal had been used to produce a number of coins, rather than to adjust the weight of specific coins. So, the coins picked for adjustment might have been random, rather than strictly the overweight ones. Edited to add this paragraph from Andrew McCabe in a Forvm discussion about Stannard scoops: "The very definition of al marco means of course that light coins were as often scooped as heavy ones. They only weighed batches, never single coins. So you could get an underweight coin being made even more underweight! But the entire batch would start heavy e.g. weighing about 4 grams average, hence even the underweight coins in the batch would on average be slightly heavier. How did they make the slightly heavier batches? Probably by eye and experience. One batch of 100 coins might weigh 395 grams, the next 403 grams the next 391 grams etc. All that mattered is it weigh at least the official norm of 389 grams. Then they scoop coins until the batches get to 3.89 grams average. Of course the scooped out silver gets thrown back in the pot."[/QUOTE]
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