Ahhh yes the Safari name was dropped when they went to numbers like the Model 1000, 1100, 1200 and later M81 in the sporting/stalking line up. we won't go into the military and target models here. many Safari models are not marked so which causes confusion and this non marking of models is what caused me to start collecting the Parker-Hale catalogues of which I now have over 20 of them. yet still have many years missing. The switch over from the name safari to the model numbers seems to have been 1968-71 as in the #70 catalogue the Standard Safari is also labelled as the Model 1000. The Models 1100 deluxe and 1200 Super are also listed in this one.
1969 is one of the years I am missing but I see the #68 lists the Super safari also as the model 1200.
IMHO I would avoid any that have Gibbs Rifle company on them as they were very shoddily put together if so bad that the American Gibbs outfit closed very quickly being in operation for less than two years. It seems the whole set up and running of it was very shady from the start.
The Midland 2100 was a fine rifle and was not a yank model. The yank one was the 2600 and quality was lacking in an awful lot of them.
The later Parker-Hale rifles were built, models 1000, 1100, 1200 and M81 upon Spanish made Mauser 98 clone actions. often the word "Spain" can be read on the side of the rear tang. So decry these actions but I can honestly say that I have found no problems with them and own several with thsi marking. It was rumoured to be "Santa Barbera" of Spain which made them for Parker-Hale.
The Model 1200 came is several variants being the "Super", "Varmint" "Super Clip" Super magnum" and "TX (which was the target version).
Model 1100 also came s the "Deluxe", "African magnum" and later the "Lightweight"
Most used a "Timney" type adjustable trigger however some retained the standard Mauser two stage trigger to watch out for this. My own 1100M in .458 Win Mag has the Mauser type trigger fitted and it was made in 1981.
The Model 1200 had it's styling revamped in the 1980's to a more rounded style losing the angled fore tip of the stock to a rounded one still made in Rosewood but again this was not across the whole range with the older style still being available.
This is a 1200C (Super Clip in 25-06) with the rounded style:-
This is a late manufactured 1200 super witht eh earlier style:-
Just out of the box in this photo. the rifle is chambered in 7.92mm (8x57 Mauser)
This is an 1100 lwt:-
in .308 Win.
and this a model 1000:-
in .243 win that I looked at but rejected due to previous owner abuse.
I hope that is of some help.