Yeah it says 18Kt Gold leafing Pen, maybe my cynicism precludes me from seeing that at this price it is of course genuine "gold".
However it does a really schmick job. The Gold looks "gold" but they can be got in brass, silver and other weird non railway related colours. Not sure of weatherability but I spray everything with satin clear acrylic anyway and for my purposes it works... On ebay or at craft shops; http://www.ebay.com.au/itm/Krylon-G...LH_DefaultDomain_0&hash=item53f6d3626c&_uhb=1
However it does a really schmick job. The Gold looks "gold" but they can be got in brass, silver and other weird non railway related colours. Not sure of weatherability but I spray everything with satin clear acrylic anyway and for my purposes it works... On ebay or at craft shops; http://www.ebay.com.au/itm/Krylon-G...LH_DefaultDomain_0&hash=item53f6d3626c&_uhb=1