I cannot ascertain the times when triangle lume vs straight line lume was fitted to 2998's. I see them on every reference and I do not know if triangle should be on some reference and not on others or were the two executions fitted concurrently. As it is so easy to change hands, there are not enough "untouched" watches to give me data.
I personally value the triangle lume hands more. I accept each lume shape on all 2998's as potentially original.
More on 2998 hands here:
http://www.speedmaster101.com/2998-alpha-hand-length/Click to expand...