JWW Gordon vaccinator
US patent office number 16478.  This vaccinator was patented by WW Gordon of Baltimore, MD in 1857.
Flip-down compartment contains 2 glass slips for spreading out the vaccinate.  The case contains a small glass vial with a brown powder.
End of the mechanism that holds the alloquat of vaccinate.
Two different Gordon vaccinators, one in brass, one in "white metal".