Campagnolo 97-02 Record and Chorus Headset Bearings: Complete set of headset bearings for 1997 - 2002 1 inch Record and Chorus standard and threadless headsets. 5/32 and 3/16 upper and lower set: http://www.bikeman.com/BB9700.html
"Each of the bearing assemblies has twenty 3/16" diameter steel ball bearings held in a steel retainer." (The ones in your picture look like 19 bearings)
Wheel Making Bottle of 150 loose ball bearings - 3/16 inch, Wheels Manufacturing produce a much higher grade steel bearing that's found in high-end Shimano and Campagnolo hubs and other high-grade components:
Would ask Andy at CampagService or Mercian Cycles, or measure your existing bearings carefully as some of the info on the web varies:
http://www.campagservice.co.uk/index.htm
http://www.merciancycles.co.uk/campagnolo.asp
JensonUSA for 97-04 Re/Ch Campagnolo Headset/Hiddenset Bearings $34.50 delivered I think:
http://www.jensonusa.com/store/product/BG409A32-Campagnolo+Headsethiddenset+Bearings.aspx
Campagnolo 97-02 Record and Chorus Headset Bearings: Complete set of headset bearings for 1997 - 2002 1 inch Record and Chorus standard and threadless headsets. 5/32 and 3/16 upper and lower set:
http://www.bikeman.com/BB9700.html
More info:
http://www.bikepro.com/products/headsets/campy_hst.html
"Each of the bearing assemblies has twenty 3/16" diameter steel ball bearings held in a steel retainer." (The ones in your picture look like 19 bearings)
These on ebay, but old:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=350286271084
Wheel Making Bottle of 150 loose ball bearings - 3/16 inch, Wheels Manufacturing produce a much higher grade steel bearing that's found in high-end Shimano and Campagnolo hubs and other high-grade components:
http://www.mx1.co.uk/productdetail.asp?ProductID=9491