In the RBW sales, if it says "Privately Purchased" that means there was no
price list or
auction - it did not come from a published source such as a
price list or
auction because if it
had, RBW would have written "from Credit Suisse
Auction 124" or "from Credit Suisse FPL, 1991". "Privately Purchased" means there is no record apart from RBW's statement. RBW is a great
pedigree but it would be a fruitless exercise to seek more
provenance as "privately purchased" more or less excludes the possibility.
Nice
exergue symbol!