The image below is an LS cam from Crane, hydro roller:
This doesn't mean they don't make cams w/the numbers stamped
into them- just that etched is what I see far more of, from aftermarket cam companies.
Kind of off topic, but Ratoflic, you have had at least four different
threads asking for information on cams that you only have the numbers from the end of the cam- BBF, BBC, and two SBC. What gives?