Also, have a look at the useful, general information on my Edwardian page
and see if it helps. As for the value, the most important factor deciding the value of an old piano is not its name, but its condition, and the most important aspect of that is whether it holds in tune, because if it doesn't, repairs can cost over a thousand pounds, and this is usually more than an old piano is worth. Nobody anywhere can guess the value or condition of a piano without inspecting it on the spot, and checking whether it will hold in tune. Piano dealers don't usually deal in antiques, and antiques dealers don't know much about pianos, so your local tuner is the best person to ask.
The red picture of exhibition medals mentions 1910, that only tells us that the piano was made after that event, as explained at
The keys are your best chance of a date using the link I gave you. The majority of pianos cannot be reliably dated by numbers, as I explain at