Here's the link to a Dixie thread which describes the 1978 "Dixie Edition" and 1980 "Dixie Collection" staglon LB7(8) and 144 sets in more detail:
http://www.bladeforums.com/forums/showthread.php/775962-1980-Dixie-Collection-Thread-%28144UH-and-staglon-LB-7%29
This is very interesting. I do believe I have an odd combination here though as I have not seen a three pin stagalon handle with an LB7 signature blade.
The three-line stamp LB7 blade on a staglon knife is odd. They only used LB7 blades in the very earliest LB8s ie. 1978-1981 or so. When LB8s went into regular production for 1981 they had a two line stamp as did the early LB7s. By the time Schrade switched to the three-line stamp on these knives they should have stopped putting LB7 blades in LB8s.
Once again hard and fast rules are elusive when it comes to Schrade. From what I have seen I believe the change from the two-line to three-line stamp was a running change with no firm date you can use to date your knife (ie. two lines equals pre-19xx and three line equals post-19xx). For a while it seems it was a toss-up which stamp you would receive as they used up old blades (that's my assumption anyway based on LB7 examples).
Here's an example of what I mean:
This LB7 is serial AA65958 and has engraving dating it to 1983. It has the two-line stamping:
This LB7 is serial AA50907. It has same initials of the engraver as the previous knife and because the serial is so close to the previous knife it can be assumed to have been made right around the same time (1983). It too has a two-line stamp:
Now here is an exception which screws up any rule making regarding dates and two versus three line stamps.
This LB7 is serial Y13364 (earlier than the two double-alpha knives above) so it should have a two-line stamp. Right?
Wrong! It has the three-line stamp!
All three example are complete when it comes to bling. All have same black sheath, white box and identical paperwork. I had hoped the change from two-line to three-line stamping would be a firm date that could be used to narrow down date of manufacture but as I have tried to demonstrate, it appears that in the early '80s some two-line knives left the factory after some three-line knives which completely screws up the date/stamp correlation.