I used one of them back in the late 60s when I worked in a small town Shurfine store. Used to hate when someone ordered a 30 or 40 pound party platter and we would be using it for hours if they ordered thin sliced and it had to be cleaned thoroughly between different meats and cheeses for platters. God bless you If you can pick one up to put it away because I couldn't anymore. Most of the cheap Hobarts are trashed or 3 phase.
This thing surprisingly works just as good once fine tuned and only weights about 25 pounds to put away when not used. The biggest issue is the blade is not big enough for fresh baked crusty bread to curl around so I still have to slice that by hand.
Yeah - - I've done thousands of conferences, weddings, meetings, etc. (I once guestimated I'd cooked for 300 (?) wedding receptions)
Some of them were deli platters. Hated those friggin things. Labor was HUGE.
Many of the slicers since the 70's are 120v, even the chain-driven carriage models, which no one would want at home anyway.
You are certainly spot-on as far as size/weight. Even an older light duty slicer would have a larger footprint and probably weigh 40-50 pounds +.
I saw a decent little Hobart go for $20 at an auction few years ago. Blade was good and it worked. Even had the sharpening stone fixture on it.
Was tempted, but I didn't need one and it probably weighed 50 pounds....