Refusal to authenticate second-hand goods is the norm these days. For example, in the luxury space, you can't get a Louis Vuitton or Chloe handbag authenticated by the respective manufacturers. This is increasingly the case because the counterfeits are so good, even employees can't recognize them.
I did a consulting project a few years ago for one of the world's top luxury conglomerates, looking for both grey market and counterfeit sites on the internet. During that time, I met in Geneva with the commercial director of one of the world's most exclusive watch brands. He showed me a watch that someone bought online, thinking he was saving 35% on the cost. The watch stopped working, and he brought it to an authorized dealer in San Francisco. They looked at it, determined that it needed to go back to the manufacturer in Geneva, and sent it. In Geneva, the manufacturer's employees opened the package, inspected the watch, and sent it to the master watchmakers on the factory floor. It was only when it was examined by the master watchmakers that they were told the product was a counterfeit.
I tracked down the source of the counterfeit watch. It cost some scammer about $1000, which the scammer married to a counterfeit register receipt, right down to the terminal ID and the name of the employee who supposedly sold it (cost: ~$50). Then they turned around and sold it on an online store for $40,000.
And yes, the counterfeit looked that good. Nobody is going to authenticate anything of value anymore. It's too easy to make a convincing knockoff, and the authenticator gets no benefit and all liability (whether loss of reputation or by being sued).