The stem on my Nightmare Topre Mummy I has always had problems due to bubbles and the first few times it broke I was able to repair it but this weekend both sides of the stem broke so I needed to transplant in a new stem. I decided to have some fun with the swap and ended up changing the cap over to Alps
Yes, the board is really dirty but it's just an IBM 5140 I'll be using as a donor for SKCM Browns and it was the nearest Alps board after the stem was finished.