From Lou's buyers guide:
BIEMMEZETA: Italy, 011-39-429-780788. Tanner Cycle, Peabody MA 01960.
Province of Padova, Italy. Italian threading. Investment cast lugs and
bottom bracket shell. Columbus tubing.
Models:
Chronostar 85 SL (Wishbone seatstay)
further CR archives discussion of BMZ:
I have an '84 Palo Alto. It has Columbus tubes and green/yellow Palo Alto
stickers like the one on EBAY. It has a 'bmz' stamp on the bottom-bracket.
In earlier discussions, it was identified as a product of Biemmezeta,
"another contract builder in the 'Romani' style" - according to e-RICHIE.
. . .
My '84 frame has a semi-sloping chrome crown and Colnago-style scallops on
the seat-stay caps, with generic triangular lug cutouts and engravings of
the Columbus dove. I like it. Although it lacks snob-appeal, it's more
neutral than my twitchy Trek 959, more resilient than my short-top-tubed
Zeus bikes, and I don't fret about keeping it good like my De R(heart)sa.
So yes, I'd scarf that up in a heartbeat. either get some Palo Alto repop decals
or have some decal maker do up something snobbish like Colnassini, De Narello or Pogliago!
marty