Gage ripening season is crazy early this year, I have been picking Bavays since June 30 and Old Green Gages since July 4. The harvest has been peaking up in the last few days with a lot of Bavay, Golden Transparent Gage, and Purple Gage plums. Oullins Gage is already done, Old Green Gage and Reine des Mirabelles are almost done.
Brix ranges from 25 to 30+ depending on how ripe a particular fruit is.