This is one of Broadwood's own player actions: look at the whole
underside of the piano packed with pneumatics.  That's why it's
got a perfectly normal Theme-accented tracker bar.

Broadwood top actions bear a strong resemblance to Hupfeld ones.
Broadwood fitted all sorts of player actions over the years:
very early in-built 65-note Pianola actions, Hupfeld, their own,
several others, and in later years Ampico.  The eBay offering is
well overpriced and probably the least desirable player you'll
find in these pianos.

Julian Dyer