air
airmail
approval
approved
brown
city
code
communication
control
country
date
delivery
envelope
express
icon
illustration
imprint
ink
isolated
letter
mail
mark
modern
moscow
new
number
numuber
office
old
passport
post
postage
postal
postcard
postmark
print
priority
retro
round
rubber
russia
service
sign
stamp
symbol
tourism
vintage
white