When my sister and her husband moved into their new house at the end of 2015, I promised to make them a numberplate.
They finally got it as a christmas present in 2016.
The glass is roughly A4 size, and made from 4 sheets of float glass, stacked and fused together. The number was cut from aluminium sheet and sandwiched between the glass sheets.
The street name was created by deeply sandblasting the glass. The surface of the lettering is actually smooth: the apparent speckling on the surface of each letter is actually the back side of the glass which had been sandblasted.