sizer identification

[atr]

I picked up a couple of sizer which are much different than the typcial sizers I use in my Lyman 45. The sizer on the left (my typical type) has smaller lube holes and an O-ring seal. The center and sizer on the right have larger lube holes and no O-ring seal. All the sizers fit into the Lyman 45.
Can anyone help identify the center and right sizer? Is is a Lyman or some other brand ?
thanks
atr

[shaune509]

The Lyman/Ideal and Rcbs/Lachmiller sizers share the same type of dies. I think that the die on the left with the O-ring is a newer version attempting to cut back on leakage. Herters and other house brands rebranded or copyed this same design.
Shaune509

[462]

Older Lyman's