Roman Empire, 3rd - 4th Century ADrnBronze crossbow fibula or brooch measuring 60x48mm. Nicely incised details, the iron pin rusted away as is usual for these.rnrnFor reference see Richard Hattatt, Ancient and Romano-British Brooches, #104. Also see A. G. Poulter, Nicopolis as Istrum, The Finds and Biological Remains, #2.5 to 2.7.