To determine exactly which one you have, look for these visual cues:

You can find similar archival numbering in the Istanbul University Academic Archive. 2. Medieval Spanish Literature (Gonzalo de Berceo)

Plate 38b in these contexts often depicts bone artifacts or ivory carvings from the Late Antique period (4th–5th century AD), such as decorative pins or small tools.

Specifically, Lv 38b is cited in research regarding ancient bone industries, such as the excavations at Perge .