"Comes with original silver screwback plate..."

[Eryk]

A couple of questions for those of you have handled hundreds of screwback awards, rather than my lowly couple of dozen. First, are all screwposts for a given order the same diameter and thread? Say, for all the millions of Red Stars. Or are there legitimate differences? (Common sense tells me that of course there are differences, but common sense has been wrong before...) I ask because screwplates are not 100% interchangable; so obviously the size/thread is different. Second, is there any data on the weight of silver vs alloy screwback plates? Weighing what I have there are large differences in weights; from 6 grams to almost 13 grams. Any 'lineage' of the plates?

Lastly, does anyone actually believe the "comes with the original silver screwback plate" statement some sellers make? I mean talking about suspensions is bad enough... the plates are made to come off, practically begging to be mixed up! (But to show how neurotic I am, all mine are marked with little sticky tags with the s/n of their order. )