The "Rocket" style guitars were sold under many brand names, but were all built about the same. Very popular in the 60s. I have owned a couple Silvertones (Sears) and enjoyed them all - and still own my favorite. Sturdily built, bolt-on necks, often with Bigsbys, reasonably light, and usually unique pickup styles - foils, lipsticks, and mini-humbuckers. Most, if not all, were full hollow-bodies, so feedback can be an issue in certain circumstances. MANY models shared the same body/neck with different appointments.
Necks are not for shredders, but very comfortable. 12-14" radius fretboards. To me, the necks felt and played very much like vintage Gibsons. Tuners usually junk. Hard to find a vintage model with original tuners. Really not many downsides to these guitars other than lack of esteem among cork-sniffers. Poor-man's Casino...