Using the PCGS coin grading App, your 1919 SLQ appears to be at least an XF-40 to XF-45 grade, though I wish the photos were in a bit better focus. Switching to the PCGS Price Guide App, the current retail for that coin in XF-40 condition is $100. I’m sure that will be for a coin in non-dug condition. PCGS (and other grading services I presume) note on their slabbed coins that were “dug”, that there is Environmental Damage, which would lower its collector value.
Was yours dug from the ground?
In any case, it’s a beautiful specimen.
Jim