Opinions on Thai Baht

Late 19th Century no date silver Thai Baht. Advertised as UNC. I'm thinking more like a slider. Obverse has a lot of hits. Could be from bag marks or cabinet friction. Still a good amount of luster. Also possibly dipped. Can a 140 year old original silver coin exist without much toning?

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I hate the ones with no date. I have a bunch of asia ones like that.
Chris
*Ping!* Calling Shroomdude! Come in, Shroomdude!
Most Siamese & Thai coins are dated,but the figures are only in Thai.You need to have a numeral chart there to help you work out the date.
It's a different story with Siamese & Thai banknotes.They are a pain in the arse to try & work out the dates,just like Japanese banknotes as well.
Aidan.