10717 Detroit Avenue
Cleveland, OH 44102
United States
Gray’s is a modern, fine art and antiques auction house combining the convenience of 21st century online technology with the excitement of a traditional live auction. Gray’s Auctioneers are Northern Ohio’s leading auctioneers & valuers of fine art, jewelry, decorations, antiques & rugs. With over th...Read more
Two ways to bid:
| 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 |
Mar 18, 2026
De Forest 2 Stage Amplifier and Battery, 20th Century,
De Forest Radio Telephone & Telegraph Company 1922 two dial amplifier in a pine case with detachable lid, Type DT-800, and a pine cased battery.
Battery Dimensions: H: 8 1/4 x W: 14 x D: 7 3/8 in.
Radio Collector`s Guide 1921-1932
Collector's Guide to Antique Radios 4. Edition
Literature/Schematics (1)
Radio Manufacturers of the 1920s, Vol 1 (Page 173)
Untested. Battery case has an alligator finish. Wear commensurate with age. Legible instructions included inside top cover.
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.