Not only do they reproduce the manufacturer on the sign, they also reproduce the stamps, like Veribrite Chicago, etc.
In other words if you see a 29” Phillips 66 sign and think it’s real, just because it has a Veribrite-Chicago stamp, think again.
Before you buy a sign, learn the differences. You have to go to shows and look at real signs. My advice, never buy a sign on line unless you know what your doing. Buy from reputable places, such as guys on here, and at reputable shows.