Traditional self-tie bow tie from Hawes & Curtis of London.  Pure silk.
Adjustable to fit collar sizes up to 20" approx.  The bow itself measures 4.5 inches wide x 2.75 inches tall.  
If you can't quite remember how to tie a bow tie, please let me know when you pay, and I will include an instruction card with the bow tie.

Condition: Good condition (used).