Posted By:
Richard MassonTypically, with the 1890 cards (the only year it applies),
a "PL" or "NL" are added by hand on either the photo or in the caption. Most (maybe all?) 1890 cards are poses re-issued from prior years, so if there is neither a PL or NL on the card, it is probably not from 1890. Jay, Joe or Trevor can correct this response at their leisure.