An “incorrigible and calculating criminal” has been convicted of stealing a painting by Vincent van Gogh and another by Frans Hals from Dutch museums last year, and sentenced to the maximum eight years in prison.

Neither of the paintings, each worth several million euros, has been recovered.

The 59-year-old man, whose identity was not released in line with Dutch privacy rules, was found guilty of snatching the Van Gogh painting, The Parsonage Garden at Nuenen in Spring 1884, from the Singer Laren museum near Amsterdam.

A few months later, he stole the 17th century Two Laughing Boys, by Frans Hals, from the Museum Hofje van Mevrouw van Aerden in Leerdam, the Central Netherlands Court said in a statement.

The court said the Hals painting was valued at 16 million euros (£13 million). It did not give a value for the Van Gogh work.

On the very rare occasions that paintings by the Dutch master come up for auction, they attract multimillion-pound prices.

The paintings were stolen by a man who broke into the museums at night and fled on a motor scooter driven by an accomplice.

The defendant, who has a previous conviction for a similar art heist, denied involvement.

“The court doesn’t believe this,” the court said in its statement. “His DNA was found at both crime scenes and the man can’t explain how that is possible.”

The court described the paintings as “part of the national cultural heritage, they are important for present and future generations”.

It added: “That is why, and given the criminal record of the suspect who is, according to the court, an incorrigible and calculating criminal, the court considers the maximum sentence to be appropriate.”