I see this is entered in the spreadsheet. Figured I'd post this for the weight discrepancy.
Champion (Bonney) 1 3/4" opening, 3" jaws.
Post Office weighs this at 7lb 12.2oz, the bathroom scale is pushing 8 lbs.
I see it advertised as 6 3/4 lbs.
This catalog cut shows the difference between the clamps for the bench.
The rather hefty looking nut is part of the cast.
It's compared with a 2 1/2" jaw vise.
The anvil is marked with 121
https://www.garagejournal.com/forum/attachment.php?attachmentid=636824&d=1490370458%22
explains semi-steel jaw
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Something a little different.
The collar has a tab on it.
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Not advertised in the 1922 catalog.
It's been painted and that paint refreshed.
I hope to get a better result this time around.
akasrick