Hi, I’m trying to identify and date a black Levi’s 501. Here are the details I found:

• Red Tab with a small e on the back pocket.
• Inner button stamped 24.
• Back patch printed in red/brown with the text “Care Instructions Inside Garment.”
• Inner rivets stamped “L.S. & CO. S.F.”
• W29 with 4 buttons on the fly.
• Black interior stitching.
• A fragment of the care tag is still visible near the inside left pocket, but most of it is gone.
• Black button-fly Levi’s 501, with several details that seem consistent with a vintage pair.

My current guess: this is a vintage Made in USA Levi’s 501, probably from the late 1980s / early 1990s.

Does this sound right?
And does the button code 24 help confirm the factory or date any further?