Hinsdale coin silver spoon

[AllSeasons]

I came across this HInsdale spoon, and I was hoping to get the forum's expert opinions again. I was able to find information on this silversmith on americansilversmiths.org, and here's the info below. However, I'm not sure about the 3 marks next to his name that make this look a lot like silver-plated. I guess my question is: Is this solid coin silver or silver-plated? Also, what is the significance of the other 3 marks? As always, appreciate any insight you can bring.



The images are below. I have the seller's permission to use these images to ask around a bit. Thank you in advance.

[wev]

Hinsdale was the retailer. The wholesale pseudo marks have been attributed to Jacob Wood working in NYC while also in several partnerships. Dating is presumed to be c 1835-1845.

[AllSeasons]

Perfect, thank you!

[wev]

Is it single sided or patterned on the back, too? If the former, then earlier.

[AllSeasons]

I just purchased the spoon. Looks like it's just patterned on the front.

Here's a picture of the back: