The nearest I have been able to come up with is the one printed on the endpapers of David Scurrell’s book, The Book of Margate. As far as dating this map goes, if the date is mentioned in the book I haven’t found it. The part on the back endpaper shows both Margate stations so the map must be after 1863. I am guessing that it is about 1870.
Update I now have the date for the map, I found it in the book 1873.
For comparison here is a snapshot of the Google map which is up to date.
Searching for old maps of Margate I also came across one for this part of Margate in 1809 from the book I publish http://www.michaelsbookshop.com/catalogue/id322.htm
If you click on the maps they will enlarge and if you click on the enlarged map it will often enlarge again, you can then do what I have been doing, placing the photographs and speculating about the changes to Margate seafront.