Deal has changed considerably with 1,2,3,5,7,13,14,15,16,17,18 from my recollection being original greens. 6 is very close but slightly moved due to the sea wall. I maybe wrong on 13, but do not have a copy of the club history, anyone help out?
6 and 15 have had the tees moved considerably changing both angle and length. The tee on 6 used to be what is now the back tee on 16 so was just off the back left of the 5th green (it's currently used as the winter tee on 6.
The 15th was a dog leg left with the tee on the back left of the 14th green.
With the exception of the 4th Sandy Parlour the far end of the course changed considerably for the 1920 Open.
Sandwich - in my time the 3rd green site has changed considerably, the 8th from a par 3 to epic par 4, the 11th changed from a par 4 to par 3 and a new green site on 14 lengthening the hole by around 70 yards.