Four vintage Nicholson Steel Files. One marked slim taper mf, one flat mill bastard and two marked Nicholson X-F(One Size 0 - 1 Size 2). Mill bastard file measures 10" long, the slim taper file measures 7 3/4" long,  the X-F no.0 is 7".and the XF- no. 2 is 7 3/8".  All have nice logos. They are in great used condition. May need cleaned. Thank you for looking.