Personally I think that too much emphasis is being placed on "railroad watch" with the front runners being Bunn Specials, Hamilton 992's, NY Standard, Ball, etc. while the rest of the field is being ignored.
There are plenty of 12s watches that are the equal of the 16s RR watches in accuracy and BETTER THAN the 16's in cases, plate engraving & damaskeening and dials. Yet these are ignored by the uninformed who think that ONLY RR watches are worth collecting. (Mostly because the RR watches bring high prices - so these must be "better" than the others.) The only "difference" is that the 16's were "RR time standard approved" while the 12's weren't. Big deal. Most 16s RR watches never saw a day of RR service any more than the 12's did.
Does anyone really think that a 12s 23j Seth Thomas in a hunter case couldn't keep RR time within the standard? Does anyone think that a 12s, being 1/4" or so smaller in diameter, is too difficult to read as accurately as a 16s?
Really? Me either.
Anyway, your Columbus is probably like all the other makers out there. Some good, some bad, and some mediocre. None of them is as accurate as quartz and all of them tell time within a reasonable level of accuracy necessary for both yesterday AND today.