We have a Rubber Jewelry Mold which is brown.  It is vingage and was used with pewter to make pendants.  It measures about 9" across x about 3/4" in thickness (this is from the tops of the metal pieces to the back).  I'm not certain what this pendant depicts.....  It does show some wear from use and age as shown in the my photo's (discoloration on the side where it may have gotten wet?)  There are marks on 1 of the pendants and above to the side there is "15 on" written on it.  A few of the metal pieces have some corosion around them (the worst one is shown in my photo).  It is in overall guardedly good condition.

Rubber Jewelry Mold Brown