Here we go

1889 Daybook page, your rifle is at the bottom

Blow up.
You are fortunate having a name "Alexander" (many did not, being made/bought in for stock)

"500 bore Back Action Double Rifle, Royal (Wow! top grade)

Hammers. A D (Anson & Deeley) snap fore end Top? lever Pistol Hand, Cheekpiece

???????????plates???? for sling

Bend 2 1/4" 1 1/2 1/16

Length (of pull)14 5/8" - 14 1/2", 15" (for each trigger)

Set off 1/4 - 5/16" what the circled 8 of 36 is I have no idea

Number 12314

That is all H&H have, which is what I have for my 2 doubles

If you wish I will send you the downloads direct for you yo print

Pics please! If you can not post them send them direct to me (at low 640 thingys) resolution

I hope this is of some help

Tony (TH44)