Coffee related memory lane. In the ECM Espresso museum, I saw this machine, I have never seen anything like it before. The portafilter locks in must unusually. The basket it placed underneath the group and locked in by sliding the handle up the dome on the top of the group. The dome was pristine, so I guess the handle was missing some sort of fibre pad. The PF handle would end up vertical, with the basket securely locked into the group. What an unusual and elegant idea.
Next time I want to have more time to go and carefully photograph every machine in the museum!