Quote Originally Posted by Frederick303 View Post
I had one of the early pre 1928 Parker hale No 5 sights (not 5 A). These sights were made without the adjustable zero plates that the later No 5 A sights have, and have a slightly different shape to them. I understand this pattern of sight was made between 1925 and late 1928, being replaced by the 5a in early 1929
Just clarifying...... The PH 5 sight came out in 1923/24 and was rapidly superseded by the 5a in 1925.
(sight collectors tend to rip your arms off when you get it wrong.)