[djf]

I would definitely call it deco. No watermarks underneath. Manufacture date probably no later than the early-mid 60’s.

[savedbygrace]

I’m not an expert, not by a zillion miles, but based on my remembrances growing up, I’d say that’s accurate.

Looks like you’ve already gotten the best advice, and you’re going to go for it. Good luck.

Post some more pix after you’re finished (pun intended).

[CH3CN]

Some old shellac surfaces were almost impossible to chemically remove, like old black pianos. Other than dip tanks I never found a varnish or paint remover that would do the trick. Dip takes are hard on glued joints and have a tendency to raise the grain. It's very harsh.

I did have one little trick on refinishing items that I didn't want to destroy the original color, didn't want to take forever sanding, or just wanted to touch up the look. Usually on old pieces that weren't antique, but were intesting but needed some help. I called this my recipe.

Equal parts of turpentine, boiled linseed oil and vinegar. Spread it out on the surface and scrub with extrememly fine steel wool. Wipe dry with cloth. Repeat if necessary. Buff when cleaned and smoothed to your satisfaction. You're done.