Shorty Reg Setting Markings

I went in the shorty to clean all the grease out of the reg and replace the reg O-rings and I found some markings on the reg indicating the setting is @137 Bar or maybe 130 ? Is that a Czech number 7 ? I thought they came set higher like 140-145, I was going to turn it down, but not needed now after seeing this. She was still hitting 870 with 15.9s @ this setting. I’m tuning her in for 820 fps with 15.9s because when it falls off the reg it stays @ 820 for almost two mags. Anyone else’s reg marked like this ?