Driven Radio Show #224: John Mihovetz and Dan Morris

Brett and Mark welcome John Mihovetz and Dan Morris to discuss their new company Authentication and Grading Services, an independent grading and authentication service for petroliana, dealership, and antique advertising of all types, what to look for in vintage signs, and when it makes sense to have your collector piece authenticated. This and much more on Driven Radio Show! Hosted on Acast. See acast.com/privacy for more information.