This gold key belongs to Steinbach's Chubby Toy Soldier, 
S1869 from the Nutcracker Ballet.  Made specifically 
for this Steinbach nutcracker, it may have also been a part 
to another Steinbach creation.

3 x 3-1/4 inches - 7,5 x 8,0 cm

Made in Germany by 
Christian Steinbach, GmbH

Sorry - No longer in Stock & unlikely to obtain again!
Check out a craft store for possibilities...