The Okito Dollar Box is designed to work with one US silver dollar.
Okito Boston Box routines are legion. This is Viking's beautiful One-Coin Silver Dollar Boston Box.
Crafted from solid brass, designed to be used with one or two coins only. Has Boston Box feature. Comes with brass lid and complete instructions. Top Viking/CW quality.
Routine allows you to cause a coin to penetrate the box; coin vanishes, reappears, etc.