HI does anyone know how to date these as I now own 2,one with semi digger plough one with cultivater and semi digger plough.i will in time need to date these also to get rid of one plough and get a general purpose bodied plough also 2 cultivater tines and clamps .that I will do when I get time to advertise for these bits.yet to get serial numbers off of machines .I believe there is a section in the club thatbmb owners can get information from other owners.any info much apreciated .mike berry .getting rid of my mini gapper as its too much for me now to get on and off trailer.so info please.mike berry