Possible Clues:

• The sign of a law degree comes between them and them
• Crest or symbol
• Having only one token law degree between the two of 'em
• Ball-cap symbol
• Could a shamrock be for them on either side of a law degree
• That's a sign they've got only one law degree between the two of 'em
• Visible symbol of an abstract idea
• There's some sign of them either side of a law degree
• Symbolic representation
• Symbol, device that represents something