All the answers are in £s, shillings or pence. No two values are the same. Some of the answers are slang and some lateral thinking is required.

Poundsshillingspence
1A stone??????
2The first bicylcle??????
3Robert??????
4A type of singer??????
5A kind of pig??????
6A leather worker??????
7Mid part of a gorilla's knee??????
8The Sun, Mars and Pluto??????
950% of a pair of women's pants??????
10A Royal headdress??????
11Hit repeatedly??????
121.6 oz??????
13A girl's name??????
1450% of a coronet??????
15Known as the "barmaid's grief"??????
16A Young kangaroo??????
Total27661/2