UK Piano Page Piano Forum
Please read the Piano Forum FAQ for more details. Also, read the piano FAQ for common questions on pianos Please don't ask us to place a value on your piano as an on site inspection is required. Contact you local piano tuner who will be more than happy to help.
You probably didn't see the small print at the top of the forum page which says it is not possible to value a piano without inspection.
explains that most pianos cannot be reliably dated purely on the basis of numbers. Near the bottom of the page I list some Berry numbers in the forty thousand range for that period.
Nobody anywhere can guess the value or condition of a piano without inspecting it on the spot and checking how well it holds in tune, so your local tuner is the best person to ask about that.