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Wed, Mar 18, 2026 11:00AM EDT
Lot 31
3 Max Kohl Scientific Laboratory Apparatus
Estimate: $500 - $700
Bid Increments
| Price | Bid Increment |
|---|---|
| $0 | $10 |
| $200 | $25 |
| $500 | $50 |
| $1,000 | $100 |
| $2,000 | $200 |
| $5,000 | $500 |
| $10,000 | $1,000 |
| $20,000 | $2,000 |
| $50,000 | $5,000 |
| $100,000 | $10,000 |
| $200,000 | $50,000 |
| $1,000,000 | $100,000 |
Three Max Kohl Scientific Laboratory Apparatus, 19th Century,
German cast-iron and brass scientific instruments with an acoustic theme:
A Chemical harmonica (or a singing flame demonstration apparatus). Glass tubes of graduated lengths fit within holes in the support bar and over four burners with brass taps producing sound; A Kaleidophone on a wooden base with a Max Kohl plaque, used to demonstrate acoustics; a Max Kohl disc raised on a tripod base with a turned wood handle that raises the disc. With a brass acoustic resonator on a rod by an unknown maker.
Largest Dimensions: H: 18 1/8 x W: 13 1/2 x D: 7 in.
Glass tubes are missing from the singing harmonica. All lots have imperfections or the effects of aging. Gray's Auctioneers shall have no responsibility for any errors or omissions.
German cast-iron and brass scientific instruments with an acoustic theme:
A Chemical harmonica (or a singing flame demonstration apparatus). Glass tubes of graduated lengths fit within holes in the support bar and over four burners with brass taps producing sound; A Kaleidophone on a wooden base with a Max Kohl plaque, used to demonstrate acoustics; a Max Kohl disc raised on a tripod base with a turned wood handle that raises the disc. With a brass acoustic resonator on a rod by an unknown maker.
Largest Dimensions: H: 18 1/8 x W: 13 1/2 x D: 7 in.
Condition
When you’re the winning bidder on an item from Gray’s Auctioneers, you have three options for claiming your new treasure: 1. You can schedule an appointment to pick it up at 10717 Detroit Avenue in Cleveland, Ohio. 2. You can arrange for a third party service like UPS to pick up, pack, and ship your item. Two recommended UPS Stores are: store1308@theupsstore.com (440.333.4810); store1016@theupsstore.com (330-725-7033 press 9). 3. If you would like fine art craters or for blanket wrap shipping services, please contact Gray's.
From the Estate of John A. Davidson, Jr. Proceeds to benefit the APL of Lorain County and the Dittrick Museum.
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