A 3D laser engraved crystal glass block, 80 x 50 x 50 mm, featuring the Crossley Brothers Atmospheric gas engine, 1/2 HP, C1872. This laser-engraved sculpture is floating in pure optical glass, which makes a beautifully hand crafted work of art and stunning display. This crystal sculpture is unique to the Anson Engine Museum and is one of a series of four. The crystal block comes in its own individual gift box. The photograph does not do this sculpture justice.