UDR

UDR is an error that can be found on the stems of some Pez dispensers. It is an abbreviation for "Upside-Down R."

Error Information

Based on

The registered trademark symbol (®) that can be found after the word PEZ on the side of the stem where the letters read from bottom to top. On UDR stems, the R in the circle is upside-down. This is presumed to be an error with the mold that produced the stems.

Variations

The UDR can be considered itself a variation of the "registered" symbol.

Years Produced

Approximately from 1990 to 2008.

Feet

UDR only appears on dispensers with regular (not thin) feet.

Patents & Countries

The UDR error can only be found on dispensers made in Slovenia, with a 4.9 or 5.9 patent.

Stems

It is possible to find UDR on all stem colors.