I brought home my 4" engineers vice on the back of my motorbike ( for the enthusiasts, a Francis Barnett 225cc Cruiser) back in 1962 when I was working at Ozalid in Loughton, Essex.
It was and still is a Woden 190/TA with quick release.
It say's on the side "Steel" as opposed to I suppose to "Cast iron"
I recently dumped the magnetic protective jaw protectors and fitted the version that you have missed i.e fibre and bent tin plate (or bent zinc plated steel) As you are now aware are readily available from the E-something or other website.
I recently removed that from my bench and fitted an Eclipse 4" swivel vice, beautiful vice but I think I will try to refit the Woden because I miss it !!! and I will have room once I remove the Arbour Press.
Len.P.