Australia Post's watches debacle continues to dog the company after it was revealed the four Cartier gifts spent on senior staff totalled $19,950.
Chief executive Christine Holgate originally told an estimates hearing the luxury items cost $12,000.
She has since been stood aside pending a review into what she said was a reward for senior staff members who helped secure a deal to do banking in post offices.
On Friday evening Australia Post Chair Lucio Di Bartolomeo said he had been made aware of "further details of the purchases" and wished to clarify the record "as a matter of urgency".
He said the four items were purchased in November 2018 at a cost of $7000, $4750, $4400 and $3800 - a total of $19,950.
Mr Di Bartolomeo said Australia Post will continue to participate transparently with the budget estimates process and fully cooperate with the investigation to be conducted by the federal communications and finance departments.
Prime Minister Scott Morrison told the parliament on Thursday the gifts were disgraceful, and demanded Ms Holgate step aside.
Rodney Boys, the chief financial officer of the government-owned business, will act in Ms Holgate's role during the investigation.
On Friday, it was also revealed chairman of the corporate watchdog ASIC, James Shipton, had stood aside pending an investigation into $118,000 in expenses, which he has pledged to pay back.
Australian Associated Press