I have 2 glass cameos that I am seeking any information on~ The glass cameos may have been made by Grand Duchess Maria Feodorovna~ One cameo is a silhouette portrait of Grand Duke Paul and the Grand Duchess~
It is signed, Maria F., and appears to be dated,4 April 1791~

The link below shows a similar cameo at the Metropolitan Museum of Art~ The cameo in the museum's collection is also signed, Maria F., but is dated, 21 April 1791:
http://www.metmuseum.org/toah/works-of-art/1999.525

I also have a smaller unsigned glass cameo of Grand Duke Paul that also may have been made by M. Feodorovna~

More photos are available~
Thank you in advance~
Most sincerely~ E. Alton
NOTE: My pictures are too large for posting to this forum~ I am happy to send photos to interested parties~