This is a "500 Kip" banknote, printed in 1988 by the Lao Peoples Democratic Republic. it is uncirculated (never used).  The subunit of the kip is the "att". 

Shipping Policy: "Free" is shipped as a letter without tracking or insurance "USPS First Class" Domestic postage includes tracking number. "USPS Priority" is expedited shipping. "Int'l Letter" shipped as a letter, usually with tracking. "USPS First Class International" includes tracking. On my items requiring the purchase of postage, I am always happy to combine for a discounted rate. For six or more items with "free" shipping, or if items with "free" shipping add up to $15 or more, I will upgrade to First Class at my own expense.   ALWAYS SHIPS FROM USA.

Thank you for your interest in history!