No other marks.
Would it help if I send you a picture of the serving spoon in question.
If the answer is yes, how would I send the picture to you?
I bought the serving spoon on ebay. If you want I could attempt to send you the info from the ebay site.
Let's try the following.
Go to ebay.com and enter the following code # XXXXX the search screen: 390336311387.
Hopefully, pictures of the serving spoon should come up.
If this does not work, please let me know and I will use one of the suggested methods you advised me of.
Good luck to us.