We do buy Hummels but we pay VERY modestly for them as the market is flooded with them while demand in all but non-existent. Most “plates” have little to no value. Again the law of supply and demand rules. There are exceptions of course, but unless you know you have the cream of the crop, don’t get your hopes up.
You could also call them and ask for their advice.
For that, you'll probably have to contact individual dealers.
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