There is a Cossor 540 on facebook currently
https://www.facebook.com/marketplace...7195632095630/
Bit of a big beast but it has FM and a reflex cabinet with woofer and tweeter.
The tweeter and reflex port are visible in the picture the speakers are other wise totally enclosed.
The usual problem with Cossor sets of this period are the knobs they split, this seems to have knobs all present and correct.
I already have 2 examples, would make a pretty decent set for a new restorer the FM doesn't seem to give much problem except the 6AQ8 (ECC85) getting cathode poisoning by lack of use on FM.
Cheers
Mike T