While there are four seperate series of gold certificates in these years, the differences are minor across the designs. Series 1922 are by far the most common. Among the earlier series there are rare varieties. Star notes are tough to find in series earlier than 1922 but they did print them. All note from this series are readily available and make for easy collecting.
This note features the first treasurer of the United States Michael Hillegas. This note doesn't get a lot of respect because the front is boring and no one knows the central character. The back is the most interesting aspect of the note. This note is pretty common with over 6500 known. A mid grade example can be bought for a couple hundred. A full range of expected values would be from $65.00 to $900 in Gem.
This note is the most valuable in the series. Not rare but a nice type regardless. With about 750 known it's a readily available type in all grades. A nice middle of the road example can run from $600 to $900. A full range of values would be from $400 to $4500. On display is a rare replacement note. You can tell because the serial number has a star next to it.