Probably not the place to ask about this one but not sure where else to ask. I have 5 of these with consecutive serial numbers that I bought when they came out. This one is different than the rest. It looks like a double die. All opinions welcomed.
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I believe these are ejection doubling, its the results when coins adhere to the die after they are struck, caused by production related factors. I have seen few of these variants.
The design variations on early years are more of an interest to Panda collectors, unless otherwise is a true doubled die. Gold and Silver Panda Coin Buyer's Guide by Peter Anthony has pictures of few examples.