As you can see, this gentleman is balancing the tram on his head. And yet he looks so nonchalant.
It's a shame that someone removed the stamp. It wasn't likely worth much anyway, and the postcard loses something important in the process, not just the stamp, but the cancellation date. We can make a pretty accurate guess though based on the cancellation message, which urges people to join the Reichluftschutzbund, the State Air Protection Corps., which was formed in 1933.
The Berlin tram system was (and is) extensive. It was one of the earliest tram systems, with the first public line opening in 1847. Most of the lines that ended up on the western side of the city after World War II were replaced with bus routes, but the East Berlin system remained largely intact.
The message on the back of the card reads:
I'm having a very nice time in Berlin and wish it could last forever. With best regards Edith Flemming
Edith could not have foreseen the horrors of World War II, just around the corner. She could not have known that this part of Berlin would become East Berlin and that the remains of the palace would be demolished in 1951. She would not have wanted to stay forever though, that is certain.