Definitely a 110. It has every single sign of it, and the blade is marked 110 too.
It may be a little more trouble than usual to flatten and polish the blade. Quality control issues. But once you do, the steel they used during this period will nearly always give good service.
The body will be the hardest part. Take a fine flat file and lightly go over the ramp where the blade operates, and that will probably catch and show up any lumps, bumps or out of flat pretty quick. The blade has to lay flat to work!
Then the all important bottom that slides over the wood in use? This is where Stanley of this period may or may not show itself to be less than stellar.
The casting of iron had slipped by this time, and it may be slightly warped with a lot of flatening needed. Or it my be coarsly cast "grainy" iron, and impossible to polish well.
Some are, some aren't. Its kind of a crap shoot.
In Stanley's earlier history, the basic casting, seasoning and machining of the iron itself was what made Stanley immortal. They were really really good, and really careful about their iron. As good as any there ever was, and more so than most.
In later periods this concern was largely ignored because most people forgot what good iron was all about. Good iron still got though, but it was as much by luck as by careful design and construction. So you just have to investigate for yourself.
The lever cap is one of the few nickelled examples of a bright shining lever cap.
So even if the body turns out to be a dud, that lever cap can be polished and transplanted onto an earlier, better body, to really dress up a standard #110.
So at the least you can have a good blade and a pretty lever cap and all you will need is an older tired 110 body to make yourself up a fine working plane for the construction type jobs this pattern of plane was always meant to do.
An earlier #110, missing the blade and lever cap, can be had for about 2 dollars anywhere old tools accumulate. Its a useful plane that is largely ignored by the collecting community.
yours Scott