Substitute for spring (no. 20) for HP-97 printer

[AndiGer]

Thank you for the hint to determine the spring constant c. Long forgotten this is important ;-)
Measured on the other side, spring there is still ok.
Came across with about 85 g weight displacement is about 0.75 mm which will lead to c about something more than 1.
Wire thickness is around 0.3 mm.
So should be more like that one:
https://www.febrotec.de/content.php?lang...ails=16719
Andi