Last Updated: Oct 07, 2016 Views: 72
Sounds like a very interesting find. Unfortunately, as a non-profit, cultural institution, The Museum cannot offer appraisal services. To determine the value of your glass grenades, you may want to consult a reliable local antique dealer, or send a photograph of the object to a reputable auction house (see ArtNet’s directory of auction houses worldwide, http://www.artnet.com/auctionhousedirectory/index.aspx).
You can also find appraisers through professional organizations such as The American Society of Appraisers (phone) 1-800-ASA-VALU (online) http://www.appraisers.org or The Appraisers Association of America (phone) 212-889-5404 (online) http://www.appraisersassociation.org/
Thank you for writing, good luck in your research,