Just went back and looked at your picture....It appears the fold down record hold down is missing from your tower where the edge of the records rest on.
It is NOT missing. It is flipped back, sitting down on the pusher platform housing, out of the way as it should be when loading records or removing them. This has the newer, diamond-shaped cross-section with a rubber insert for cushioning where it rests on the stack of records.
The original Type A had the type with the round cross-section and rubber rings for cushioning; it didn't sit down all the way down when flipped back, because with the Type A's newly restyled pusher platform housing, Garrard re-used the same hold-down part that had been on the RC88, with a different paint color. The newer type, which remained unchanged through the A70 and the 70 Mk II, was introduced with the Type AII.
There are Garrard advertisements from the 1962 selling season that show a hybrid Type A: the grey color and trim-ring mat of the Type AII but no transit screws; and with the old-type record hold-down and suspension springs with built-in leveling provision of the original Type A. It may be a handmade prototype sample built for the Advertising Department.
With luck you may find a good mat for your A70, with unperished rubber. The condition of the mat seems to depend upon the conditions under which it was stored. The one on my A70 was cracked in the middle and simply installing or removing it risked tearing or cracking it even worse. To use it I cut a round hole to clear the center boss on the platter. To hold it down I cut a piece of black "Foamies" material from the craft store; it fits under the center boss and its outer diameter is cut so that it overlaps the old, aged mat just short of the concentrically-ribbed section, thus holding it down. On my old, original Type A the mat with the moulded-in "Garrard" script shattered into a pile of black rubber shards, so it is completely replaced by a piece of that same Foamies material, cut to install exactly as the original mat. These models do not need a heavy rubber mat to damp the platter, as does the Lab 80, because with the "sandwich" platter design, the two platters with their different resonant frequencies damp each other.
On both my A70 and Type A, the original foam pads between the inner and outer platter have crumbled to dust; flexible, web-like shelf liner from the Dollar Tree store is a viable and cheap replacement.
And, oh yes...I, too, say KEEP 'EM BOTH!