Greco T-bird...

[Denis]

It looks modded, unless Greco made them this way.
http://cgi.ebay.com/Greco-Thunderbird-Bass-Custom-/260617924438?cmd=ViewItem&pt=Guitar&hash=item3cae09ef56#ht_500wt_1154

[Basvarken]

With active Bartolinis, a Hipshot supertone bridge , Hipshot extender, stacked pot?

I guess you can say modded yes  

[Barklessdog]

Would look right at home in Mark's collection.

[TBird1958]

Would look right at home in Mark's collection.

Love the color!   The modifications however, 

That *was* a perfectly good bass, the Supertone alone just wrecks it IMO, the fact that it's corners overhang the centerblock is making me ill................... I think Joie should get a hold of him for the original pickups