Thanks Rich Andrews and dewickt.
I found that I have several spare parts: a NOS CD multisections can 12+12+12uF/450V, a NOS Sprague 10+10+10uF/450V, a Solen FAST METALIZED POLYPROP 22uF/630V and a Sprague Atom 16/475V caps.
Which one is better for this filter cap? Tie all 10uF or 12uF, or...