• U+20A7, ₧ in SourceCodePro shows as "P" overstruck with "—" in SourceCodePro. It looks similar to U+20B1, "₱" but with one dash instead of two.
• apparently, this was a glyph variation going back to Unicode 1.0.0
• But as in L2-00/013 the charts reflect "Change glyph shape of U-20A7 PESETA SIGN to “Pts” - noted in minutes L2-00/005
• current charts as for 8.0 refolect the "Pts" shape.
• Note, this symbol is for the obsolete currency ESP

Also, SCP isn't alone in this usage. Other fonts on my mac have the "old" shape instead of the "Pts".