Comparison of the mass (top-left), expansion velocity (top-right), linear momentum (bottom-left), and kinetic energy (bottom-right) of HaTr5 as a PN (horizontal solid line) and as Nova Sco 1437 (horizontal dashed line) with theoretical expectations of CNe for 1.00 M_⊙, 1.25 M_⊙ (magenta) and 1.40 M_⊙ (red) WD of effective temperature 10 000, 30 000, and 50 000 K as labeled in the top-left panel (Yaron et al. 2005). The vertical solid (dotted) line corresponds to the visibility time of 14 days (7 and 28 days) of Nova Sco 1437 as registered in historical records.