Wilton vise identity confirmation

[GT6cops]

A quick question about identifying a Wilton C3 vise. I purchased this vise today which appears to have all the elements of a C3 without having a C3 casting mark on the static jaw. The only markings I found on quick examination were (1) 10103 above where I would expect the C3 mark; and (2) a date stamp of 11 78 (presumably November 1978). Are there any other locations where marks might be found? Thanks for any information
John

 

[1982fxr]

It's the real deal.

 

[GT6cops]

Thanks 1982fxr for the confirmation. It looked right, measured right, weighed right….just no designation.