I just acquired 33 insulators from a fellow who got them off a rail line I hunt often a few years back. About 25 are 143's. All but two 143's are Canadian Pacific, while there is one CNR and one Standard. Lot's of sage green. Here's my question: Pictured is the 143 variation which has a high wire groove, and embossing. No periods and with MLOD. I am unclear as to which EIN this one is. there are 3 more like it here. I am not sure what an MLOB looks like on these, as one of the EINs has both MLOD and MLOB. Do you know what EIN it is? Thanks!