shilling sign vs soldo

shilling sign

noun
  • The symbol '/' used in the United Kingdom before decimalisation to separate shillings from pence when writing out sums of money. (Examples: 7/6 = seven shillings and six pence; 7/- = seven shillings exactly.) 

soldo

noun
  • An Italian coin, formerly one-twentieth of a lira. 

How often have the words shilling sign and soldo occurred in a corpus of books? (source: Google Ngram Viewer )