Coronagraph images and GCS 3D reconstruction for the CME (green mesh) and associated driven shock (red mesh) as seen via three different instruments: COR2-B (a, e), C3 (b, f) and COR2-A (c, g). The C3 images are magnified for better visualization. The right plots (d, h) show the 3D representation, in HEEQ reference in R_⊙, of the CME and the driven shock, together with the nominal Parker spirals (solid lines) and the lines connecting the Sun (dashed lines), for STEREO-A (STA in red), STEREO-B (STB in blue), MESSENGER (MESS in orange), and the Earth (L1 in green). The Sun is shown as a yellow circle (not to scale).