Viking Dublin woodworkers back saw

a hand made back saw of the Roman, Viking and Medieval period, based specifically on  the wood quay excavation in Dublin,Ireland (john's lane find E173:3441) Dublin Viking Longport, nominally a 4" long blade set in an ash wood handle.  die quenched low carbon steel, examples of this blade type also turn up in both Roman and  the medieval periods, presumed for use in fine woodworking applications, nominally 14-18 tpi with set, designed for hand sharpening with a fine file

made in Sheffield england by daegrad Tools