Pardon my very badly taken photographs, but the images suggest that the engraving is done by hand. The relative location of the bees are consistent but the following can be observed from the YG 16/1860/2:
a) bees are slighty further away,
b) the edge of the bands on the hive is more curved, and
c) hive door appears wider.
WG 16/1680
YG 16/1680/2