Unidentifiable references (U1-U27)

See also Catalogue Raisonné of the Unidentified References (UA1-UA50)

In this list, taken from Welsh/Joosten 1998, there are 27 works of art by Piet Mondrian made from the second half of 1911 onwards that cannot be identified or identified with certainty. These works are indicated with the letter U followed by a number. Joosten found the artwork references in various sources, including exhibition catalogues and letters from Mondrian dating from 1922, 1927 and 1928. Joosten named a possible candidate for half of the unidentified references. This is noted in RKDexplore as ‘possibly identifiable as’ with a link to the artwork concerned ¹ [For example https://rkd.nl/explore/images/277266].

X Piet Mondriaan   , Bloemen, 1911 Image fullsize Show in RKDexplore Share Piet Mondriaan   Bloemen 1911 ? x ? cm Collection: not applicable U1

X Piet Mondriaan   , Dans le jardin / in den tuin, 1912 Image fullsize Show in RKDexplore Share Piet Mondriaan   Dans le jardin / in den tuin 1912 ? x ? cm Whereabouts unknown U2

X Piet Mondriaan   , Dans la forêt, 1912 Image fullsize Show in RKDexplore Share Piet Mondriaan   Dans la forêt 1912 ? x ? cm Whereabouts unknown U3

X Piet Mondriaan   , La fruitière, 1912 Image fullsize Show in RKDexplore Share Piet Mondriaan   La fruitière 1912 ? x ? cm Whereabouts unknown U4

X Piet Mondriaan   , Marine, 1912 Image fullsize Show in RKDexplore Share Piet Mondriaan   Marine 1912 ? x ? cm Whereabouts unknown U5

X Piet Mondriaan   , Sur les dunes, 1912 Image fullsize Show in RKDexplore Share Piet Mondriaan   Sur les dunes 1912 ? x ? cm Whereabouts unknown U6

X Piet Mondriaan   , Arbres, 1912 Image fullsize Show in RKDexplore Share Piet Mondriaan   Arbres 1912 ? x ? cm Whereabouts unknown U7

X Piet Mondriaan   , Arbres, 1912 Image fullsize Show in RKDexplore Share Piet Mondriaan   Arbres 1912 ? x ? cm Whereabouts unknown U8

X Piet Mondriaan   , Arbre, 1913 Image fullsize Show in RKDexplore Share Piet Mondriaan   Arbre 1913 ? x ? cm Whereabouts unknown U9

X Piet Mondriaan   , Arbre en fleurs, 1913 Image fullsize Show in RKDexplore Share Piet Mondriaan   Arbre en fleurs 1913 ? x ? cm Whereabouts unknown U10

X Piet Mondriaan   , Femme, 1913 Image fullsize Show in RKDexplore Share Piet Mondriaan   Femme 1913 ? x ? cm Whereabouts unknown U11

X Piet Mondriaan   , Compositie XI (teekening) in zwart wit, 1915 Image fullsize Show in RKDexplore Share Piet Mondriaan   Compositie XI (teekening) in zwart wit 1915 ? x ? mm Whereabouts unknown U12

X Piet Mondriaan   , 'Oeuvre néo-plastique', 1920 Image fullsize Show in RKDexplore Share Piet Mondriaan   'Oeuvre néo-plastique' 1920 oil paint / canvas, 75,5 x 65 cm Amsterdam ( A. Mak), 1921-10-19, no. 81 U13

X Piet Mondriaan   , 'Oeuvre néo-plastique', 1920 Image fullsize Show in RKDexplore Share Piet Mondriaan   'Oeuvre néo-plastique' 1920 oil paint / canvas, 67 x 55 cm Amsterdam ( A. Mak), 1921-10-19, no. 82 U14

X Piet Mondriaan   , 'Komposition', 1921 (1920?) Image fullsize Show in RKDexplore Share Piet Mondriaan   'Komposition' 1921 (1920?) oil paint / canvas, 55,5 x 67,5 cm Collection: not applicable U15

X Piet Mondriaan   , 'Peinture', 1921 Image fullsize Show in RKDexplore Share Piet Mondriaan   'Peinture' 1921 50 x 50 cm art dealer  Léonce Rosenberg, Paris U16

X Piet Mondriaan   , 'Peinture', 1921 Image fullsize Show in RKDexplore Share Piet Mondriaan   'Peinture' 1921 41 x 49 cm art dealer  Léonce Rosenberg, Paris U17

X Piet Mondriaan   , 'Peinture', 1921 Image fullsize Show in RKDexplore Share Piet Mondriaan   'Peinture' 1921 50 x 40 cm art dealer  Léonce Rosenberg, Paris U18

X Piet Mondriaan   , 'A large new canvas', 1922 Image fullsize Show in RKDexplore Share Piet Mondriaan   'A large new canvas' 1922 ? x ? cm Whereabouts unknown U19

X Piet Mondriaan   , 'Komposition no. XIV', 1922 Image fullsize Show in RKDexplore Share Piet Mondriaan   'Komposition no. XIV' 1922 62 x 62 cm Collection: not applicable U20 / B180 (identified 2017)

X Piet Mondriaan   , 'Abstractie' Image fullsize Show in RKDexplore Share Piet Mondriaan   'Abstractie' (1887 - 1944) oil paint, ? x ? cm Het Nederlandsch Kunstverbond, Netherlands U21

X Piet Mondriaan   , 'Gemälde' Image fullsize Show in RKDexplore Share Piet Mondriaan   'Gemälde' (1887 - 1944) oil paint, ? x ? cm Collection: not applicable U22

X Piet Mondriaan   , Komposition V', 1926 Image fullsize Show in RKDexplore Share Piet Mondriaan   Komposition V' 1926 ? x ? cm Collection: not applicable U23

X Piet Mondriaan   , 'A small canvas', before 1927 Image fullsize Show in RKDexplore Share Piet Mondriaan   'A small canvas' before 1927 canvas, ? x ? cm Private collection U24

X Piet Mondriaan   , 'A canvas', 1927 Image fullsize Show in RKDexplore Share Piet Mondriaan   'A canvas' 1927 canvas, ? x ? cm Whereabouts unknown U25

X Piet Mondriaan   , 'An old canvas', 1927 Image fullsize Show in RKDexplore Share Piet Mondriaan   'An old canvas' 1927 canvas, ? x ? cm Whereabouts unknown U26

X Piet Mondriaan   , 'A canvas', 1927 Image fullsize Show in RKDexplore Share Piet Mondriaan   'A canvas' 1927 canvas, ? x ? cm private collection  P.E. René Trousselot, Katwijk aan Zee (Katwijk) U27