not a bad guess... here's what I'm thinking, but nothing is certain until seeing more photos of the back
Almost everything about this rug says Kerman. Looking at the corner shot, the way the rug has worn, and overall attributes point to a kerman from just around 1915-1925. the border corners show similar wear pattern to that vintage (or slightly earlier) and the border design is very well reconciled. The floral sprays in each corner of the allover field also are directed toward the center of the carpet. typical Kerman execution
Palmettes were used often in this vintage, as seen in the border and field... All that on top of the cochineal color red... fairly certain this is true cochineal, or natural, insect dye. Very typical of the "cream of the crop" kermans of this era several decades after synthetics worked their way into the market. however, the other colors are probably not natural.
I would actually ask for additional photographs of the worn areas. this carpet may be one of the better ones worth investigating more. It seems like a somewhat unusual example given it has the physical features and construction appearance (going by the corner with fringe) of a 1905-1915 kerman with 1920's design. Either this rug was very much ahead of the market, or it truly is one of the better rugs produced in or around 1920. really interesting example, but I'd be curious to see what others have to say.
even if it's in decent condition, so long as the wear is pretty even, this could be a good buy.
I really, really want to see photographs of the back of this. Perhaps just to satiate my own curiosity... this is a really intriguing rug not necessarily for value, but the implications I see in the photographs.