Butchered and jackass….. ?NO.?
it looks like they had made a 6 cavity preselector using the 6 pass/reject cans in series with notches on both sides of the pass frequency. ?This is one way of making a narrow passband with low loss and large attenuations close in. ?
If these loops were rotatable Q loops like used in the Sinclair Q duplexers, you can do wonders in shape and customization of the pass and reject curves.?