The 1923-24 Exhibit issues are generally considered a single 128-card set despite being issued over two years. The cards feature black and white photos (some with a white border), and blank backs. Of the 128 subjects, only 58 were "new" cards, different from previous issues, and are more difficult than the 1921 and 22 cards.
Strong example, graded VG+ 3.5 by SGC, with light wear and some mild surface staining, more visible at the top half of the card.