Here is a bit more information I was able to dredge up:
1875 - Name changed to Golden and Silver Sebrights. No color was given for the comb. Cocks over 28 ounces and hens over 24 ounces to be disqualified. No other weights listed. Treated as two separate breeds.
1879 - The first appearance of standard weights are set forth as cock 26 ounces, hen 24 ounces and pullet 22 ounces.
1883 - Wattles were first described as "bright red". Male wings changed to "carried low, but not so low as to touch the ground."
1888 - Weights changed to cocks 26 ounces, hens 22 ounces, cockerels 22 ounces and pullets 20 ounces. Cocks over 30 ounces and hens over 26 ounces to be disqualified.
1889 - Changed to one breed with two varieties, Golden and Silver. Shape and color descriptions defined separately for the first time.
1893 - Ear-lobes changed from white to "color immaterial in both varieties".
1905 - First appearance of line drawing illustration of the Silver Sebright male and female by Franklane L. Sewell (1905).
1910 - Plumage of Golden changed to golden yellow, droppings the word "rich". New illustration of the Silver Sebright male and female by Arthur O. Schilling (1910). Overall appearance of a much lighter colored bird due mainly to a reduced number of feathers and very fine lacing on each bird. First time that the male and female tail is required to be carried at an angle of seventy degrees above the horizontal. Specimens exceeding 4 ounces over standard weight to be disqualified. Eye color of Golden male and female changed from bright bay to brown, Silver male , female comb and face changed from bright red to reddish purple.
1915 - Ear-lobes of both varieties and both sexes changed to "reddish purple preferred". Golden plumage changed from golden yellow to golden bay. New illustration of Silver Sebright male and female by Arthur O. Schilling (1914). In this illustration the lacing appears to be slightly heavier than previous illustration.
1920 - Shape and back changed from short to very short.
1952 - New illustration by Arthur O. Schilling (1952).
1965 - The American Bantam Association Standard first published. This is the first time that a complete description was ever made of the Sebright Bantam in both varieties, both as to shape and color pattern. All of the sections of the nomenclature are separately set forth for the first time. Several sections of the nomenclature had never been before delineated in any standard, including the A.P.A., English, Dutch, German and French standards. Inasmuch as a complete terminology had been established for all other breeds and varieties of bantams, it was considered important that no exception should be made for the Sebright Bantam.
Obtained from:
http://www.angelfire.com/ab/sebrightbantam/history.html
