Oh man, you are a legend to me! I deeply appreciate you and I remember that the first purchase I ever made on the internet 20 years ago was one of your klein bottles! It was such a scary but amazing first experience. It seemed so magical at the time, to buy an object from the other side of the world! As a teenager I had to convince my dad to use his credit card. We were afraid to send the credit card number by email, and we used a fax machine by your suggestion.

The bottle arrived broken and we were dismayed. We sent you a careful report with photos of the packaging and the broken bottle (real film photos, that we had to develop and then scan into the computer to produce an email). You were so kind to send a new bottle and even said sorry. I was amazed by your reply and by the fact that people so far away could be kind to each other. It really blew my mind. At the time, in my country, the internet was seen as a really unsafe place were you were not supposed to ever say your real name.

To this day, I keep both bottles you sent as my most prized possessions. The cracked one is actually cooler, and the crack has been growing (you can make the crack grow by pressing slightly with the thumb). In a few years it will break the bottle apart in a topologically interesting way.