Yes! Good to see it in print. I used to think it was a corruption of sirrah but it can't be ? Serry is a greeting to an equal, whereas sirrah was used with some contempt or agression.
I'm N E Derbyshire area.
Great to see 'serry' recognised !
I wondered if serry could be a misused form of sirrah? However, while sirrah was used to show some contempt, serry is quite the opposite. So l'm no wiser now.
I'm from Derbyshire Rother/Erewash area. John