I have a covered dish that was inherited from my mother-in-law who thought it came from the Chicago World’s Fair (1893).  The mark on the bottom shows J.P. over a horizontal line with L below it.  The mark is blue, not red.  There is no “France” stamped on it.  I have not been able to identify the pattern or find any other information on this piece.  Can anyone help?  I have tried 8 times to upload a photo after resizing and compressing the jpg file, but the photo still will not load.