LETTERS AND MARKS AFTER THE PRICES

Our postcard descriptions always come before the prices. Lower-case alphanumeric abbreviations after the price (sometimes including punctuation marks) are inventory codes that help us to serve you quickly.
We use them to check the availability of items you ask about, and also to find those items when we prepare your shipments.

This idea is also used by many large catalogue companies, for the very same reasons. If they use an exclusively numerical code, it is often called a "stock number", but that number also encodes significant information about availability and location in their inventory.

For example, the af following $1.00 in:

"FLAMBOYANT BLOSSOMS / Antigua, W. I." unused chrome
from a photo by Ho Hutton, saturated colors. $1.00 af

is an inventory code, and is not a part of the postcard description. If you ask us about this postcard, you will be answered most quickly if you include the inventory code with the description in your e-mail.