After O'Hanlon is trapped in a box, Diana pulls up in her car and parks behind a truck. After the thieves get in a van and drive off, the shot changes and the truck is no longer in front of her car.
When they roll off and Steve grabs the man, his hair is messed up and you can see the face isn't Lyle Waggoner's (probably Whitey Hughes, the stuntman for this particular episode). In the very next shot, it shows Lyle Waggoner with his hair firmly in place as he continues to fight that bad guy.
After O'Hanlon is trapped in a box, Diana pulls up in her car and parks behind a truck. In the background O'Hanlon's car is facing forward toward Diana's car. After the thieves get in a van and drive off, the shot changes and O'Hanlon's car is now facing away Diana's car.
A pot of gold coins would be too heavy for one man to lift by himself, not to mention
with one hand over and up into the helicopter.
During the chase scene at the airport which is supposed to be in England, the Los Angeles landscape is visible in the background.
When Thackery is placing the pot of gold onto the helicopter, it tilts over but none of the gold spills out.
When Steve Trevor and the other guy fall onto the boxes, you can tell that it's padding that they land on and not boxes.
When the shoe repairman closes up his store, he does not take down the "open" sign.
After O'Hanlan's life was saved, when Thackery is shooting at Wonder Woman, the controls (controlling the bullet explosions) are visible in the palm of her hands.
At Heathrow, the woman on the intercom notes a flight for United British Airways. All of the signage at the flight desk, however, notes the name as United British Airlines.