These came to me from a very reliable source in OZ several years ago. They appear to be a matched set and the box bottom sure looks like it could be a factory dealer box? No way of knowing but they were always in this box......These are a semi-long form at 1" x 1 7/8" and weight varies from 11 to 20 grams. This seemingly matched set exhibits the fact that the filling was random and the weight varies as a result. Stamping is in the light purple. There are sacks that have red stamping but I have never seen one in the flesh! They must be rare.....the standard for most is dark blue to black and then shades of purple......