David Oscarson 15th Anniversary American Art Deco Rollerball n Ruby. The 15th Anniversary collection is a celebration of the American Art Deco motif and 15 years of excellence in design. This pen has incorporated fifteen sections of guilloche engraving, each taken from ten of the 21-plus collection designs over the past fifteen years. The pen is crafted in .925 sterling silver, and incorporate multiple levels of diamond-cut guilloche engraving and a combination of translucent and opaque hard enamels. New in presentation case with literature. No. 001 / 150