Help with a dateless SLQ.....UPDATE IT HAS BEEN DATED!!!

I know it's a slick, but I picked it up for melt because of the S mint mark. Can anyone help me date it? I honestly can't tell with my 16x, but there are some good eyes here! The way I guess, it could be 17S T2, 18S, 19S, 20S, or 23S. Any other die markers to look for??
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Can we see the other side for the heck of it?
Disclaimer: I'm not a dealer, trader, grader, investor or professional numismatist. I'm just a hobbyist. (To protect me but mostly you! 🤣 )
I don't see a date; it looks to me like the date wore off and then received a few subsequent hits in that area.
This is exactly like most of the SLQs looked at the tail end of circulating silver.
Type 2, so 1917-20 or 23-24.
18s or 19s.
Jim
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The IB of LIBERTY is suggesting a DDO. I can not find any, you have a discovery coin +++
Filters will not penetrate image. This is all I got.

UPDATE: After a special treatment, I'm able to make out a "--20".
I am currently treating 4 others to see if I am able to bring out the dates in them as well.
How are you treating them? Acid etching like used on buffalo nickels?
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From what I have read, that does not work. I am experimenting with a couple of different solutions right now.
What works then? Do tell...
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I heard at one time there was an equivalent of nic-a-date for silver coins. I never found out what it was.
I’ve used nitric acid with various degrees of success doing this, but that stuff is dangerous. Luckily, I’m a science teacher & have access to HNO3.
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Die markers in play ?


Here's a two in the date as someone said about dateless.
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So I have been playing this weekend with safe chemicals and I have been able to pull out a few dateless. Nothing as dramatic as nic-a-date, but the above 1919 was the latest result of a slick and dateless that has been restored.
I think this one is a 1924
I still cant make this one out but I am at least seeing ghosts of a number.
I have been using a solution of hydrogen peroxide and vinegar. It is not a quick process but has been mildly effective. > @PerryHall said:
Yes but using a VERY dilute acid, vinegar!
1925-1930 is a different beast than 1917-1924. The recessed date change in 1925 makes a dateless coin far less likely.
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