Silver Rollerball Tango Pinstripe Pattern. The Tango Silver Rollerball is made from 925 sterling silver and has a pinstripe pattern. This Silver Tango Rollerball has a screw cap system and is fully hallmarked. The silver Tango Rollerball is one of our most popular designs, and it also has an engraving space. This silver Rollerball includes a luxury presentation box with 10 year guarantee and silver cleaning cloth. Matching Silver Ballpoint and Silver Fountain Pen available. See below for matching pens, refills and accessories.