B

Bangkok (British offices in Siam)
A B overprint on a Straits Settlements stamp is one issued for the British post office in Bangkok, Thailand. There are two types plus forgeries.  File:Bangkok 4c.A.webp 

United States
B is the coded 15c domestic first class rate in use beginning in March 1981. Stamps were created in 3 formats: sheet, booklet and coil forms.  File:US Bstamp.jpg 

[[Category:B]]