At the time of the world fair of Paris, in 1900, two (private) presentations were organised below ground: a mining exhibition and a second one dedicated to underground archaeology, under the title "the underworld". Two men were behind these events: the engineer Louis de Launay and sculptor orientalist Augustus Rivière. De Launay was chosen to host these events, the site of the ancient quarries of the city of Paris, at the Trocadero.
Among the ancient reconstitutions was the mastaba of Ty, which had been discovered some decades earlier by Augustus Mariette.

The press has very little to offer on this event, nevertheless, there remains some photographs.
The arrangement of the rooms had nothing much to do with reality and the exhibit is centred on a large piece (named the serdab) in the middle of which was located a double statue of a seated couple. In this case, it represents the famous statue of prince Rahotep and the one of his/her/its wife Nofret, which had recently been discovered in Saqqara by Mariette (see ). The surrounding walls were painted with more or less faithful representations of the tomb scenes. Louis de Launay declared that he had been inspired by the famous statue which seems to emerge from the wall in the then newly discovered tomb of (the one called Mera, at that time).

In spite of all its shortcomings and approximations, this underground reconstruction had at least the merit to exist.
It was unfortunately completely destroyed during the construction of the National Theatre of Chaillot.

Thanks to Gilles Thomas for providing this information, and the authorisation to reproduce the photos
The article which he dedicated to the topic is located here:
THOMAS Gilles : Un mastaba à Paris en 1900, Toutankhamon Magazine, N°24, December/January 2005/2006, p.30