I'm coming to this thread a little late, but I do collect these things. From the look of the grill and the record storage below, this would be a C19, the earlier 250 usually had different record drawers below. It was introduced in 1919. But there is overlap, as cabinets (made by furniture companies) got used up or not (and collectors sometimes put the wrong grill on a repaired machine), so you will have to look at the medallion inside, which should also identify it as a "Laboratory Model" which was meant to make it appealing to the techies of the day, I suppose. It had a bigger spring motor and bigger acoustic horn than cheaper consoles.
The Edison cylinder finally failed as a pre-recorded music format during the depression. (It continued to be used for office dictation until after WWII when tape came along. But Victor also failed during the depression. RCA then bought Victor and some years later switched branding to RCA-Victor. Radio in the 20s was the internet of the 90s.
RCA bought Victor just before the market crash in 1929, Ned Johnson sold out at exactly the best time. Pressure from new radio technology, which was the rage, was hurting record sales. Edison was for a long time a holdout against electronic recording techniques, by the time they jumped into that (pushed by Edison's son) they had lost the game and the final late-20s electric records and radiolas never took off for them. Edison abandoned original recording to cylinders before WW I, they continued to produce cylinders mainly for the rural market but these were copies of material recorded for the flat Diamond Discs, which weighed in at about a pound each and were vertically cut. These late cylinders were transferred by playing a Diamond Disc to make a cylinder mold, so they are generally worse sounding than the same title on Diamond Disc. The selling point for both was that you never had to change the diamond needle, versus the usual 78s played with a steel needle that had to be (or ought to be) replaced after each play. Edison officially quit making commercial records October 21, 1929, the stock market crashed on October 24 and the Depression followed that, it had nothing directly to do with Edison's surrender or RCA buying Victor.
Jeff