Founded in 1864, the Cigar Maker’s International Union is one of history’s most influential. Among its many contributions is the national label to identify Union made goods. Adopted at the 1880 convention, the label is blue as a compromise between San Francisco which issued an anti-Chinese white label in 1874 and St. Louis which issued a red label during a strike against a wage reduction in 1875.
The Union label was furnished free to all strictly Union shops, to be placed on cigars made by Union members. If the manufacturer also bought and resold Chinese, tenement house, or scab cigars, it was up to the Local Union to decide whether to withhold the label. If the label is granted to such a firm, it may not be placed on any of the disapproved Chinese, scab or tenement house cigars. It was forbidden to use the label in any factory which paid less than $6 per thousand to its roller, or on any cigars sold for less than $20 per thousand (2¢ each). No factory who offered any premium as an inducement for the sale of his goods could legally use the label. One of the more controversial, some say short-sighted, decisions by the C.M.I.U. prohibited the blue label to be used on cigars made in whole or in part by machinery (which at first included moulds). Although this dictum was modified later, it prevented bringing the huge new female work-force into the Union expeditiously, causing a substantial loss of momentum in the Union movement.
Because the label underwent frequent changes, it can be an outstanding tool for dating cigar boxes more precisely than is possible with US tax stamps. Some caution is suggested, however, as these “Blue Labels” were not legally required by the government or the Union so older issues were sometimes used for a year or two after new ones were available.