The plans and tooling for the grand tourer were supposed to have been sold last year.
The package deal also included a year and a half of technical support from the British carmaker. A number of parties were rumored to be behind the purchase, including Morgan, but it turns out that whoever was supposed to be buying the Vanquish plans didn't because the deal fell through.
That led Aston Martin to write off the $23.1 million it was expected to generate from the sale, which was actually believed to be to a Chinese group, according to Automotive News Europe.
"The commercial position on this contract has deteriorated with significant doubt remaining over the outstanding receivable," Aston Martin said in a statement.
The initial sale was uncovered deep in Aston Martin's initial public offering perspective (on page 168 of the 321-page document to be exact), and supposed to have taken place on June 2018.
The second-generation Vanquish was produced between 2012-2018 and was powered by the same Ford-derived 5.9-liter V12 as its predecessor, the Aston Martin DBS. In the car, the engine produced 565 horsepower and later 595 hp in "S" trim. A number of variants were made during the car's production run including drop-top Volante models, a Centenary edition model to mark 100 years of the company, and a handful of redesigned Zagato versions.