The works which for some reason have been left suspended and unfinished.
In this case, the date indicates when the work was suspended and not when it was made.
These are works that I have decided to stop working on because I lost the initial desire that had led me to start them or because they were suspended for a certain period and it no longer made sense to start working on them again after so long.
 
The example I am providing is a series of albums of drawings that were never finished from the 1980s.

(Written in 2020. Modified in 2021)