Complex sentence: The large quantities possessed by the Lady Managers made their way into the market through dealers and other venders in the 1920s; by 1930, prices had risen to the original issue price; by 1955, uncirculated specimens sold for $20.
Split into simpler sentences: The large quantities possessed by the Lady Managers made their way into the market through dealers and other venders in the 1920s. By 1930, prices had risen to the original issue price; by 1955, uncirculated specimens sold for $20.