ENO pipes are a very early stamping by Erik Nørding. This would have been just after the SON partnership dissolve. This stamping was only used in the mid 1960s for a very short time before Nørding started using the Nording stamping.
- User:DavidChristopher states:
This information comes from Erik Nørding himself. He personally saw the ENO pipe that I have, verified that he did indeed make it, and told me the approx. time when he used that stamp.