We have come across something that has us stumped. It is an FN Browning a5 with NO SN. Patent date of Oct. 9.1900 & Dec.17.1901 - Has the early "Suicide Saftey". From what we gather it could be an early prototype MFG in 1902 Before the first official a5 of SN 1 that was MFG in 1903. There are no stampings on the barrel or hidden anywhere under the stock or forend. If anyone has any information on this it would be greatly appreciated.