Congratulations to Machinarius, who was the first to identify that this was a Douglas. He/she actually got quite close, saying it might be a “4 hp 600 cc from 1920”.
This is actually the successor to the 4, a 1928 Douglas 4 ¼ that won 1st Place in the Antique Class at this year’s Quail Motorcycle Gathering.
Here’s some more photos for you to drool over (photos by Nathan May):
And a bonus dog from the Quail, just for laughs:
