![A Christie's technician holding one of Roger Federer's signed Champion tennis balls, Madrid, 2012, with an estimate of £500-800, at Christie's in London, one of the items from the Roger Federer Collection A Christie's technician holding one of Roger Federer's signed Champion tennis balls, Madrid, 2012, with an estimate of £500-800, at Christie's in London, one of the items from the Roger Federer Collection](https://c8.alamy.com/comp/2G4E228/a-christies-technician-holding-one-of-roger-federers-signed-champion-tennis-balls-madrid-2012-with-an-estimate-of-500-800-at-christies-in-london-one-of-the-items-from-the-roger-federer-collection-which-will-be-offered-at-auction-on-june-23-with-proceeds-going-to-the-rf-foundation-picture-date-monday-june-21-2021-2G4E228.jpg)
A Christie's technician holding one of Roger Federer's signed Champion tennis balls, Madrid, 2012, with an estimate of £500-800, at Christie's in London, one of the items from the Roger Federer Collection
![Roger Federer signed tennis ball | Collectables | Gumtree Australia Port Adelaide Area - Klemzig | 1301286851 Roger Federer signed tennis ball | Collectables | Gumtree Australia Port Adelaide Area - Klemzig | 1301286851](https://gumtreeau-res.cloudinary.com/image/private/t_$_20/gumtree/0029c267-eec5-4396-8ea5-dd9f40bc7c73.jpg)
Roger Federer signed tennis ball | Collectables | Gumtree Australia Port Adelaide Area - Klemzig | 1301286851
![Signed Tennis Balls By Bior-Borg And Roger Federer With Photographs On Plaque #230995 | Black Rock Galleries Signed Tennis Balls By Bior-Borg And Roger Federer With Photographs On Plaque #230995 | Black Rock Galleries](https://www.blackrockgalleries.com/Pictures/43135807_102520222462.jpg)
Signed Tennis Balls By Bior-Borg And Roger Federer With Photographs On Plaque #230995 | Black Rock Galleries
![Roger Federer Signed Full Autograph Tennis Legend Champion New Ball With Coa - Autographed Tennis Balls at Amazon's Sports Collectibles Store Roger Federer Signed Full Autograph Tennis Legend Champion New Ball With Coa - Autographed Tennis Balls at Amazon's Sports Collectibles Store](https://m.media-amazon.com/images/I/81HdcBq3BuL.jpg)
Roger Federer Signed Full Autograph Tennis Legend Champion New Ball With Coa - Autographed Tennis Balls at Amazon's Sports Collectibles Store
![LONDON 21 June 2021. ROGER FEDERER'S CHAMPION TENNIS BALLS MADRID, 2012 Each signed 'Roger Federer' and printed with 'MUTUA MADRID MASTERS' by Dunlop. Estimate: £500-800. Christies's preview of the Roger Federer collection LONDON 21 June 2021. ROGER FEDERER'S CHAMPION TENNIS BALLS MADRID, 2012 Each signed 'Roger Federer' and printed with 'MUTUA MADRID MASTERS' by Dunlop. Estimate: £500-800. Christies's preview of the Roger Federer collection](https://c8.alamy.com/comp/2G4E57M/london-21-june-2021-roger-federers-champion-tennis-balls-madrid-2012-each-signed-roger-federer-and-printed-with-mutua-madrid-masters-by-dunlop-estimate-500-800-christiess-preview-of-the-roger-federer-collection-to-benefit-the-roger-federer-foundation-includes-sporting-memorabilia-and-20-lots-from-his-grand-slam-victories-which-will-be-offered-for-auction-in-london-on-23-june-credit-amer-ghazzalalamy-live-news-2G4E57M.jpg)
LONDON 21 June 2021. ROGER FEDERER'S CHAMPION TENNIS BALLS MADRID, 2012 Each signed 'Roger Federer' and printed with 'MUTUA MADRID MASTERS' by Dunlop. Estimate: £500-800. Christies's preview of the Roger Federer collection
![Roger Federer's Signature on a tennis ball, Sports Equipment, Sports & Games, Racket & Ball Sports on Carousell Roger Federer's Signature on a tennis ball, Sports Equipment, Sports & Games, Racket & Ball Sports on Carousell](https://media.karousell.com/media/photos/products/2016/01/14/roger_federers_signature_on_a_tennis_ball_1452783848_658b2727.jpg)