Unknown silver hallmark, possibly 900 silver?

[B804]

I have a plate that may possibly be 900 silver. The hallmark includes a figure and what appears to be the letters kso with 900 stamped below. I know 900 usually means 900 silver. I tried to find the hallmark online but no luck. I’m just trying to get some opinions on if this plate could be 900 silver. Thanks.

[silvermakersmarks]

KSCo - Knickerbocker Silver Co. An electroplater.

American Silverplate marks: marks and hallmarks of US makers: I-J-K

[Bartholomew]

https://www.925-1000.com/forum/viewtopic.php?t=7759

[B804]

Thanks for the help. No electroplate markings. Just 900. I guess the chances of it being 900 silver are low though.