Can you attach photos showing the inside and outside of it please?
Thanks for the photos. Can you provide some which show the inside of the piano? Specifically close up views of the strings and tuning pins/hammers. How long have you owned it?
Thanks for the photos. For this age, the piano appears to be in very good condition and it has likely had some restorative work done to it both in finish and mechanically. I would suggest getting a better idea of what work was done by having the piano tuner inspect it next time he is out to tune. The size is good and appears to be close to 6'. Markets are very different throughout the world for pianos and so prices do fluctuate depending on where you are. This brand of piano is no longer made as they merged in 1970 with Pleyel. You don't see this brand in America much at all since this was a Parisian company. Based on what I can see from the photos as well as your description of condition, I would recommend a selling range in the U.S. of approximately $5,500-$8,000. The higher end would depend on the scope of work done to the piano and how long ago it was done. Best wishes!