A no stars SQL makes it a 1916 or a 1917. Low mintages rule out a 1916 so you have a 1917 type 1 SQL.
There ya go! Thanks. I knew there were diagnostics that can distinguish 1916 from 1917 Ty.1 quarters, even on dateless coins, but couldn’t remember exactly what they were. It’s useful having them in photographic form. I dimly recall seeing someone (either here or on Collectors Universe) who was savvy at scrutinizing dateless T.1 coins with those diagnostics, and he had cherrypicked several 1916 coins that way.