There is a Base Italian pressing from the 80s, with the typical black-on-white Base logo. The original French pressing has a black label with orange graphics, cat. no. 28976 (September 28, 1976 recording date). The other Uniteledis Shepp, afaik, was not reissued by Base.
Jef Gilson and Gerard Terrones both had something to do with the label, though I've always heard it was mostly Gilson's deal. The inner sleeves and pressings look more like Palm than Futura/Marge.
Maybe brownie could shed some light?