Help Identifying Batting Helmets

[ndevlin]

Hoping someone could help me out identifying these helmets. I'm having trouble figuring out who wore these, especially the 51, 43, and 52. Maybe just some spring training helmets?

I have:

27
43
51
52

The 27 and 52 have the 9/07 date on the back near the number. The inside doesn't have the 100 mph padding, so these would all be pre-2013 I would imagine. Any help would be appreciated.

[ndevlin]

Pic 2

[ndevlin]

Well at first I didn't they were because of the inside padding, but I believe the 43 is Engel Beltre from spring training, and the 27 is Leonys Martin from 2011-2012.

No idea on 51 and 52.