Raimey,

Yes, it does have a Greener style saftey on the right side (there's a picture of it posted on page 2 of this).

Do you have any idea on the approx date it was made?

Thanks for all the info!

Austin

PS - For those of you interested, there's a picture on the back cover of Diggory Hadoke's new book "Vintage Guns for the Modern Shot" with him holding a 1883 4 barrel 20 bore Purdey in the Long Room at Purdey's.