Grosse Pointe, Michigan, July 16, 2024 (GLOBE NEWSWIRE) -- Broad Arrow Auctions, a Hagerty (NYSE:HGTY) company, is thrilled to announce it will present a true titan of motorsport and one of the most collectible of all Porsches extant, the 1997 Porsche 911 GT1 Rennversion, estimated at $8,500,000 -$10,500,000. Chassis 993-GT1-108 is one of just nine customer GT1s originally made and notably, the GT1 is offered directly from long-term private ownership where it has been in the hands of an esteemed Porsche co ...