As Graham van de Laar puts it, he accidentally bought the 1961 Chevrolet Greenbrier when he was "fluffing around" on the New Zealand auction website Trade Me. He didn't mean to click the "place bid" button and hoped someone would outbid him, but no one did. Little did he know, the van had quite the notable previous owner: Billie Joe Armstrong.

van de Laar put the car back up on Trade Me and explained the Green Day connection in the description. "It is very unique as it is likely to be the only one on the road in NZ, and the only one in the world that was once owned by GREEN DAY frontman Billie Joe Armstrong!" he wrote of the van. "It was Billie Joe's personal surf van he used in California, I have a copy of the "State of California Certificate of Title", goes with the van. He rebuilt it to the standard it is today."

The car comes equipped with a "GRNDAY" vanity plate and Billie Joe even signed the glove box. According to van de Laar, the Greenbrier was imported to New Zealand in 2012 and he is the second private NZ owner. Though he wouldn't disclose how much he paid when he accidentally bought the van last year, the bid started at $37,995 and is currently going for $39,995 at time of writing. The auction closes on August 28. See photos and learn more about the van here.

Photo: Getty Images