A final message appeared on the an external window at the Canterbury Museum on Saturday night.

A phantom labeller leaving mysterious messages on exhibits at Canterbury Museum has left his final note.

Museum deputy director Jennifer Storer confirmed the unknown culprit, who had been sneaking around adding their own pre-made messages to displays, seemingly pre-printed with a label maker, had been caught by a security camera pushing a note under the museum's front door.

The man's quirky messages, which looked similar to the official ones, encouraged visitors to touch delicate artefacts and mocked one of the museum's oldest and most loved artifacts.

CANTERBURY MUSEUM Hand made labels have appeared on exhibitions at Canterbury Museum.

He left notes on the mask of Egyptian Mummy Tash Pen Khonsu, on a glass display holding a statue of Buddha, and attached to a display of rock crystals urging visitors to "go on, touch it". The signs peeled off easily and never caused any damage, but if they did it would be "much more worrying", Storer said.

READ MORE: 'Banksy-style' labeller evades Canterbury Museum staff

The man's last message – a sign reading "Respect Anonymity" – appeared on an external museum window late on Saturday night, she said.

Shortly after, the man was spotted posting a note under the front door. It thanked museum staff for keeping his identity anonymous and promised that he would not return.

Storer said although she did not want to encourage copycats of "Banksy-style" label maker, some of the signs had been funny and "quite clever".

The museum had security cameras that could have identified the man, but "given that the labels have been quirky and haven't damaged anything to date, all we wanted to do was to gently discourage it from continuing", she said.

"At the same time we also see this as another form of interaction or engagement with our collections."