My B14 is definitely treated, but not in a bad way, not slimy at all, and one sees it mainly after drying how the tips clump together and dry hard. My B16 does not seem to be treated.my turn to answer this fine gentleman’s question
Only one shave but they are pretty close with some nuances I need to confirm. 26mm B16 doesn’t seem treated but 27mm b13 is a little bit but not much. Fortunately not slimy at all. Both are soft and splay easily which is my preference. I purchased both used. I need more time. Fun fun!