Yesterday, there was this ASM (anonymously sent mailer), a shiny silver mailer, that was sitting in our box. Nothing special was awaited.
It appeared that we had a close encointer of the third kind as well. An antique silver UFO was in the mailer, with pastel coloured windows and bearing the number #155. WOW!
Thank you so much, generous alien! This new mystery is really cool, a great idea for a great coin. You made our day!