Camillus Cutlery has used many different tang stampings since 1902. In addition to the four line stamping previously mentioned several three line stamps were used. Most knives made after WWII used the three line stamping with CAMILLUS underlined. Although the four line stamping was used up until the end of WWII, many post-war knives incorporated many of the war era parts that were in production at the end of the war. In 1948 the CAMCO brand was introduced. Other brands and tang stampings used by Camillus include: Kent, COMUS, Syracuse Knife, Kastor, Clover, SWORD BRAND, MUMBLY PEG, etc.
If you need information on a particular knife, just e-mail me I will gladly research it for you.
Tom Williams
Camillus Cutlery Co.