This sheet is about Year of The Hose on Indonesia Postage on 21.03.2011 that is all my knowledge on stamp and some info date which I found on the back side of your envelope.
Thank Ms. Dyah Parvotasari one new Facebook philately swap nice mini sheet envelope with me.
I have 3 rounds exchange for some nice Iran stamps from 1957 – 2009 with Mahdi Delbari up to now. Thank you for my good and young contact in Iran. I am looking forward to hearing our new exchanges. Best regards. Here are his nice envelope
Nowadays, old bridges in our city are destroyed or replaced by new ones. Sometimes I have gone by this bridge for job and cafe with friends. But now I wonder how many times remain ! So sympathetic with Mr.Viet Dung when received this!