In 2018, SG Auction presented 400 Classic Cars across the auction block with a total of $4 million in sales. In 2019, we will be presenting 1000, with a goal of $10 million in sales!

How did we ge get here? Good question!

SG Auctions was formed in 2011 when J.C. Nerstad, a small business owner and Classic Car enthusiast, asked his friend Dave Hanner, who had extensive experience in the Classic Car Auction business, if he thought they could hold a successful Classic Car auction in J.C.’s home town of Spring Grove, Minnesota. To which Dave responded…”NO!” The rest is history…



After many years of growing pains in a very difficult business, SG Auction, last fall, stepped up to a global stage on October 12-13, 2018 and had a record shattering auction in Winona MN with the event topping $2.5 million dollars in sales. Earning the respect of Keith Martin’s Sports Car Marketplace, a top internationally circulated publication, who did an 8 page atricle about SG Auction and the October sale. The is last word of the write up: “SG Auctions is poised for continued success as an auction house worthy of attention in the Upper Midwest.”

J.C. Nerstad was born and raised in Spring Grove MN. He has owned and operated several businesses in town since he was a teenager. Currently he is a volunteer Firefighter, belongs to Sons of Norway, Lions Club and is involved  with other many organizations. J.C. has always been a classic car enthusiast, even as a young boy he would work on old cars with his father. Together they would attend car shows, tractor pulls and other motor sports events. The same kind which he and his wife Darla, along with their four boys, still enjoy attending.

Dave Hanner worked as a General Manager in the auction business for many years. Dave is married and has a daughter, stepson and granddaughter with whom he loves spending time. Dave grew up restoring 64 ½ through 66 Mustangs with his father. Spending most of his teenage years living in Arizona, he went to every collector car auction he could attend.


Consistently deliver a world-class auction experience with a small town feel and value to every customer!


Keep it simple! You shouldn’t feel as though your attorney should be present in order to participate in a SG Auction event.

Surround yourself with people who are smart! Making the commitment to add several full-time staff, possessing decades of event promotion, marketing and classic car auction experience finds SG Auctions ready to deliver a world-class auction experience with a small town feel and value.

Streamline! Keeping focus on progress and improvements with our administrative and technological systems, SG Auction’s goal is to deliver the very best, consistent positive customer experience thourgh easy to understand and navigate administrative process.