I own one of these Hollands vises. It is another type of vise that was available for lighter-duty use. Plenty precise and strong for most work holding something.. Certainly not for heavy work.
I have seen half a dozen or more on the vise thread. Nice vise. Much nicer and stronger than the ubiquitous 'oval slide' 'farmers vise', that broke very easily.
Your's appears to be in very nice condition.
PierceA