Harlequin Books usually indicated reprints. Here's an example where a reprint may not have been noted. Or it may not be a reprint at all. The three copies of McSorley's Saloon (number 210) that I've seen have a July 1953 date but books 209 and 211 have a February date. The next July book is number 236. There are no other Harlequins that are dated this far out of sequence. So it may be a reprint but it's an open question for now.