In the comment field:
“Coins weight varies 5.85-6.10 g. There is no now reliable information about the coin's standard weight.”
But yeah, obviously mass production coins will have a bigger tolerance. A clad Washington quarter can have a deviation of +/- .227g, that's a range of 0.454g the Russian one has a range of 0.25g. If we all would act like this referee we could delete nearly 90+% of weight entries in Numista.
Just write 6g no decimal place or take the middle of the range and be done with it … that's my opinion, the coins are searchable with weight and the contribution field will not flag them for edit. Also the comment about the weight doesn't have to be removed.