>>110639298Depends on the series. He generally got away with it in Part 1 and 3. It's Part 2 that most often ended up with him losing whatever he was trying to steal (or at least a large part of it)- although to be fair this is by far the longest one. The more recent Part 4 also often pulled that. Then there are the specials where the treasure often ends up being some dangerous thing that's destroyed or put back in its place.
Part 5 is different from the others since it's very arc based and several of the stories are more about people plotting to kill or capture Lupin and him striking back. They do show him using a lot of the stuff from previous series, including one of the treasures that was originally seemingly lost.