 Watermarked paper, bearing the initials USIR was used from late 1877 to the end of the tax period in 1883.To help provide funding for the Spanish–American War the use of private stamps resumed again from July 1, 1898 until July 1, 1902.A variety of patent medicines, wines and other goods like perfumery and cosmetics were taxed, but only a comparatively small number of companies used private die stamps during this period.