Last week some major sales were postponed because of extremely volatile market conditions.
The partnerships have made it difficult for the company to make major sales because of tax repercussions.
He has made no major sales so far.
June seems to be a month of coin sales, with no fewer than three major sales to take place in the next few days.
The head of an auction company bearing his name, he conducts several major sales around the country each year.
Last month, in three major sales, he sold 350 crates of records.
Even more opaque are the finances behind some major sales.
The blocking or delay of major overseas sales is said to be one reason for the company's financial troubles.
"If in 10 years all the major sales are taking place outside France, this could happen," he said.
It was the third time this week that falling stock prices had forced companies to call off major sales of new shares.