Nice vice. --- good that it actually has the Handy name cast in - after looking at many ebay posts (no I didn't buy them all) and seeing a few with a decal/sticker still on, and sometimes with a cast-in size number or just a Reg Design No one sees that an awful lot of Handys were made (earlier ones with a two-casting static section bolted together), only a small proportion have the word Handy cast in and none (I think) say Parkinson, although they're in Parky's catalogues.
I've said this before - but I don't know why this is -- they cast their name into every Perfect (ie quick release) vise/vice. (I have seen a picture of one early one without, but it might have been filed/ground off).
I today found what I believe may be a very early Parkinson Handy - local flea market £5 - damaged, small, but has an interesting feature - will post a pic when I've checked it out more.