fitting luggage rack to 7 RP box

[Pearls not a Singer]

I thought AYN 912 sounded familiar. I purchased it in  1969 somewhere around South West London for £100.  It was my 3rd Austin 7 (and only car at the time) but its use was limited by a horrendous oil leak from the nose piece and I was living at an address where there was no chance to remove the radiator and cure the leak! I don't recall the details when I passed it on and replaced it with a Riley RMA 1½ litre which consumed petrol at 20 m.p.g.