My name is ***** ***** I"m happy to help.
Boisselot never published their serial numbers, so the serial number would not be a way to date your piano. Can you upload some pictures for me, including the case work (the outside) and the inside?
Please see our help page for help uploading images.
Go to http://www.imgur.com.
1. Click "Computer".
2. Double click the image you want to upload.
3. Click "Start Upload".
4. When the image appears on your screen, just copy the link from that page and paste it on this page.
If that doesn't work for you:
You can email the pictures to *****@******.***, and ask them to forward the pictures to me. You must tell them the pictures are for the Antiques category, and give them your user name and mine, which is Judith-on-Antiques. It is important for you to send the email from the address with which you registered at Just Answer. If you are sending them from a phone, you must put the original email address in the text.