During the examination of the dead cow, Constable Crabtree's large maple leaf badge is correctly placed on his hat. Seconds later, he bends to talk to Doctor Ogden, and the badge is crooked. As he straightens following the dialogue, the badge is correctly oriented.
While Murdoch and Constable Crabtree ride on horseback through the village, two 21st century onlookers holding plastic bags are visible in the bottom right corner of the shot as Crabtree says "I wouldn't have pegged you for a circus-goer, sir."
When they find the dirigible there is a modern angle grinder being used.