Pair of Yankee batting helmets that both show a nice amount of use.  Neither of the helmets have numbers and are most likely Spring Training or Batting Practice helmets. 

The first of the pair up for your consideration is a size 7 3/4" for a left handed batter and has a dial stamp that reads (11/97).  This "Authentic Diamond Collection" shows plenty of use with various scratches, dings and bumps.  It is missing some of the interior padding but does not take away from its outward appearance.  Attached is both a Steiner and MLB hologram.  

The second helmet is size 7 3/8" for a left handed batter and has a dial stamp that reads (10/98).  This fine example is an "Authentic Diamond Collection" and shows tremendous use with pine tar, scratches, dings and bumps.  It is complete with all interior padding and has a Steiner hologram attached.

Nice grouping of Yankee game used helmets and come with a Lelands LOA.