I agree with Jim its GT40P/1004. The white strip across the front clip is the only GT40 in Rob Walkers colours. The number 30 is a bit puzzling as there is no GT40 in any race around that time 1965. After the Le Mans it was used on the Shelby Caravan promotional tour perhaps the number was changed from 7 to 30 then?
GT/103 and GT/104 were in Shelby colours Guardsman Blue with twin white central stripes.
Regards Allan
103 & 104 were prototype cars that were first run by ford in 64, P1004 was a production MKl. This has to be 103 or 104, not 1004.