The High and the Deadly Affair - S1-E28
Continuity mistake: The chocolate eclair is cut open to reveal the mini-bomb planted inside. But when April picks the eclair up, it's completely intact again. (00:43:30)
The Girl From U.N.C.L.E. (1966)
21 continuity mistakes - chronological order
Starring: Leo G. Carroll, Stefanie Powers, Noel Harrison
The Prisoner of Zalamar Affair - S1-E2
Revealing mistake: Mark finds the bomb planted under his Jeep and puts it under the bad guy's car instead. When it explodes, there's a huge cloud of smoke, but before the shot cuts, you can see that the car is completely undamaged. (00:10:30)