Crowley had tried to sell the statues to Sotheby’s auction house in London between November 2022 and July 2023.
Prosecutors alleged that, if real, the items together would have been worth about £680,000 based on previous sales.
However, Judge Nicholas Rimmer said that estimate hinged on multiple hypotheticals and therefore reduced the value to £340,000.
The court heard the accompanying paperwork had been typed using a typewriter on paper embossed with an antiques dealers’ logo – and even a nine-pence stamp.
“It was a crude attempt because Sotheby’s spotted these documents as bogus fairly early on,” Judge Rimmer said.
Sotheby’s experts had also spotted multiple spelling mistakes, it was heard.