
Update: The Robert-Houdin mystery clock sold for $36,000.
What you see: A mid-nineteenth century glass column mystery clock by Jean Eugène Robert-Houdin. Potter & Potter Auctions estimates it at $40,000 to $50,000.
Who was Jean Eugène Robert-Houdin? He was a self-taught French magician as well as a horologist, or clockmaker. His father, Prosper Robert, made watches, and Robert-Houdin later married into a clock- and watchmaking family, adding his wife’s surname to his own. At some point between 1831 and 1844, Robert-Houdin invented the mystery clock, a device that baffles by keeping time without any visible gears or clockwork. He invented or refined many magic tricks that are still performed today, and his 1859 autobiography became a best-seller. Eric Weiss, a struggling young American immigrant, was so inspired by Robert-Houdin’s life story that he referenced the Frenchman in his stage name: Harry Houdini. Robert-Houdin died in 1871 at the age of 65.
The expert: Gabe Fajuri, president of Potter & Potter Auctions.
How rare are Robert-Houdin clocks at auction? They’re very hard to come by.
Is there a catalog raisonné of Robert-Houdin clocks, or an accepted count, or… There’s no great count. Even his own property got scattered to family members.
How many Robert-Houdin clocks have you handled? Two other mystery clocks, and one electromagnetic that wasn’t a mystery clock. It was one of the most expensive ones we’ve sold.

How do you know this clock is by Robert-Houdin and not his son, who made some mystery clocks after his father’s death? That’s a tough one, especially because they worked in conjunction to some degree. Two expert horologists took it apart [for Potter & Potter] and did a 12-page report on all the clocks in the David Baldwin collection. Other clocks in the auction, on examination, were pieced together with old parts or done in the style of Robert-Houdin. Their estimates would be five times higher if they were original, maybe more.
How often do you see a Robert-Houdin mystery clock with this magnifying glass-like shape, as opposed to the one in lot 30, which has a square dial sitting in a frame on a marble base? You see just one glass dial most often. This [lot 28] is a double mystery. The single mystery is the glass dial–how does it keep time? The double mystery is the glass dial plus the glass tube.
And Robert-Houdin invented the mystery clock? For a Paris exposition, yes. If he wasn’t a magician, he would have been a clockmaker. He invented a lot of things, and he was fascinated by electricity. He was one smart dude.
How does the Robert-Houdin mystery clock reflect his inventiveness? It’s interesting because it’s the confluence of two things in his life–clockmaking and magic. Here’s a beautiful clock that you’d be happy to put in your salon, but at the same time, you think, how does it work? It’s both beautiful and miraculous.

Does it work? I got it to chime, but I haven’t seen its hand move. Robert-Houdin mystery clocks are notorious for needing adjustments. You’ll need to have a clockmaker look at it.
This Robert-Houdin mystery clock has an estimate of $40,000 to $50,000. The square dial clock in lot 30 carries an estimate of $30,000 to $50,000. What accounts for the difference? It’s [the clock in lot 28] a much more uncommon form. One of the guys who did the examination for me thought it was quite unusual and original enough to be exciting to a clock collector.
Who fights more fiercely for Robert-Houdin mystery clocks–magicians, or clock collectors? I’ve had winners in both of those camps. It’s hard to predict.
What is this Robert-Houdin clock like in person? Does it make an impression? It certainly did when I walked into the [consigner’s] house to look at it the first time I saw the collection. He had 15 of them. You can instantly tell it’s something special.
How to bid: The Robert-Houdin mystery clock is lot 28 in the David Baldwin Magic Collection II auction at Potter & Potter on June 16, 2018.
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Gabe Fajuri has appeared on The Hot Bid many times. He talked about a genuine 19th century gambler’s case that later sold for $6,765; a scarce 19th century poster of a tattooed man that fetched $8,610; a 1908 poster for the magician Chung Ling Soo that sold for $9,225; a Golden Girls letterman jacket that belonged to actress Rue McClanahan; and a 1912 Houdini poster that set the world record for any magic poster at auction.
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