Olsen-Stelzer · Identification & Dating

Construction / ID tells

Hand-made inlays — photograph shaft panels. Period motifs cited by the brand: Eagle, Bronc Buster, Oil Derrick, Bluebird. Separate period pairs from modern Collector Edition revivals.
Vintage Henrietta stamps vs modern Dallas order trail (8–12 weeks in brand copy; 2018 press also cited Turtle Creek fitting; later brand footer language uses Lovers Lane).
Do not reattribute Justin stamps as Olsen-Stelzer. Stelzer–Enid adjacency is people history, not a maker stamp.
People adjacency to Nocona / Enid Justin is genealogy — not proof the pair is a Nocona.

Maker-specific markings guidance has not been documented yet. Preserve the complete stamp and compare it against dated sources.