( South Moluccas )
It is not Indonesian Stamp, it is only a Cinderalla's Stamp caused it never had registered by UPU.
This stamp was issued by RMS for their propagandas, when some South Moluccas people try to rebelled against Indonesian Government and declared their own independent day on 25 April 1950.
Note: Serial No. is only grouping by stamp series, if some one have information about the right serial number for that item. Please e-mail to firstname.lastname@example.org to help me get the right serial numeber.