I discovered at one time, although I can't locate my notes, that early HE production was in serial numbered "batches", I think of 25 guns each. I can't remember how many batches I identified before Fox started to number them randomly. I don't think the batches were as large as 50, or my 27,850 would not fit in. If batches were 50 each, my gun would be a continuation of the "original batch" starting with the first gun, 27,800. I am guessing that the first batch was 27,800 to 27,825 and the next batch began with my gun, 27,850 and went to 27,875. I may be all wrong about this, but some day I may find my notes if I took any. It was very clear in my mind when I was reading the cards. Just for your information, HE #27,850 has enormous Becker style bores but the order card mentions nothing about Becker or the size of the bores. Bill Murphy