Two Very Scarce & High Grade World's Columbian Perpetual Calendar Medals
These interesting medals were no doubt more a novelty than something one would actually put too much use. Perpetual calendars seemed to show up with a bit of regularity in advertising in the Victorian era. Both of these pieces are in superb, high grade condition and obviously bi-medallic. The larger medal has a narrow outer rim with the large inner circle turning; the smaller aluminum medal obviously has a small center piece (brass) that is used the same way, turning it to align with the information in the outside portion of the medal. With the layout of the data on the inner movable portion and the static outer section you can lineup the information to let you know what any day of the week will be on a given date will be, etc. You pretty much need to play around with them to see how easy they do their job. The center pieces are both quite tight, by design so they don't spin around, and can be turned with your finger tip or finger nail. Nice, scarce and high grades for both. The larger piece is quite rare, while the aluminum/brass piece is scarce but seen occasionally.
We would normally sell for about $65-75 and $40-$50 based on scarcity and grade.