Est.
US$400
-US$500
Broward Auction GalleryMamaroneck, NY & Dania Beach, FL
Est.
US$18,000
-US$20,000
GWS Auctions Inc.Maitland, FL
Est.
US$12,000
-US$13,000
Eastern European Art Gallery IncBroomall, PA
Est.
US$120,000
-US$160,000
Castle Valley Art Gallery Inc. Dublin, CA
![EINSTEIN (ALBERT) Autograph letter signed to Professor Sadler [n.p. but Oxford], 23 May [19]31: EINSTEIN (ALBERT) Autograph letter signed ('A. Einstein') to Professor Michael Sadler ('Sehr geehrter Herr Kollege'), in German, regretting he can not honour his commitment for the evening of May 28th](https://p1.liveauctioneers.com/1043/415651/234076920_1_x.jpg?height=280&quality=70&sharpen=true&version=1782379537&width=280)
Est.
£2,500
-£3,500
£2,200
£2,200
BonhamsLondon, UNITED KINGDOM
Est.
US$9,000
-US$10,000
Eastern European Art Gallery IncBroomall, PA
Est.
US$13,000
-US$18,900
Serenity GallerieSaint Petersburg, FL
Est.
US$10,000
-US$15,400
Serenity GallerieSaint Petersburg, FL
Est.
US$10,200
-US$15,600
Serenity GallerieSaint Petersburg, FL
Est.
US$8,800
-US$13,500
Serenity GallerieSaint Petersburg, FL
Est.
US$12,400
-US$19,000
Serenity GallerieSaint Petersburg, FL
Est.
US$10,000
-US$15,300
Serenity GallerieSaint Petersburg, FL
Est.
US$18,200
-US$26,500
Serenity GallerieSaint Petersburg, FL
Est.
US$17,700
-US$25,800
Serenity GallerieSaint Petersburg, FL
Est.
US$14,100
-US$20,500
Serenity GallerieSaint Petersburg, FL
Est.
US$16,600
-US$24,200
Serenity GallerieSaint Petersburg, FL
Est.
US$13,000
-US$19,000
Serenity GallerieSaint Petersburg, FL
Est.
US$5,500
-US$22,000
Robinhood AuctionsLas Vegas, NV
Est.
US$12,300
-US$18,900
Serenity GallerieSaint Petersburg, FL
Est.
US$7,800
-US$12,000
Serenity GallerieSaint Petersburg, FL
Est.
US$7,700
-US$11,800
Serenity GallerieSaint Petersburg, FL
Est.
US$17,300
-US$25,200
Serenity GallerieSaint Petersburg, FL
Est.
US$16,000
-US$23,300
Serenity GallerieSaint Petersburg, FL
Est.
US$10,900
-US$16,700
Serenity GallerieSaint Petersburg, FL
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