Please don't go to posted co-ordinates unless you want petrol or a library book, neither will help you!
You are looking to complete S43 3A BCD. E172 3E FGH.
Answers will be number of letters in the word answer unless digits are the answer. Please take your own pen and replace well to keep the hide safe from eyes and weather. The title will assist in getting you started.
A. I am worn as a liturgical ornament, but only at the celebration of ?
B. Digital root of the figures of the European safety standard for heat resistant ones.
C. During the reign of which monarch (number only ) did the makers form their own guild?
D. I go back in history, as I am depicted in Egypt, dating about the ? dynasty
E. One of my possible linings is ? "cool in summer, warm in winter". MINUS 1
F. Number of letters in the first word, of the 19th century name, given to thin white cotton ones.
G. I am a hybrid because I keep 4 of my contents together. I am a ?
H. Name of the rarest and most luxurious material for making me.
Now go and find a cache!