1880's Decker Brothers, New York Upright Piano

Honestly I don't know much about pianos and I only know a few self taught tunes.  So my vocabulary of different parts of the piano may be confusing.  I will try my best with this explaination.  Here it goes...The family farmstead we reside at was established in 1883, built with 18 rail cars of bricks(great insolation for the ND winters)  and is a young 125 years young this year! :) Apparently, the Decker Brothers, New York piano was purchased at the New York World's fair by my boyfriends great-great grandfather.  He was told the piano was put in the parlor and has been in that room ever since it arrived.  We don't know much about it, only that it is beautiful and it excellent condition.  There are very, very few scuff marks on the wood.  The ones that are there blend nicely when I polish it to bring out the beauty even more.   When you open the top cover, which is shown in one of the pictures, the brass plate that shows the name and other information is still shiny with very little dust and no visible rust.  If you need more detail I would be happy to do so.  The only other information I have is the carved stamp inside of the front cover.  The date is July 28th, 1885.  At this time we are doing some restoring in our home.  Our new project is in the parlor restoring the parkay wood flooring.  In pulling up the carpet I know why they picked this piano in particular.  It is a beautiful match with the floor. There is a piano bench with it which is in fair shape with very little wear from past years.  If I can provide any additional information that can be helpful, PLEASE, let me know.  We are so interested in any information we receive on this family heirloom.  It isn't really even the value, its the history that means so much.