Took some photos during my lunch.
The water table has no markings.
[Linked Image from i.imgur.com]

Here are some close ups of the barrel markings. This is the 12 ga barrels.
[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]


Here are pics of the other barrel. 12 ga one side and the other a rifled barrel with flip up sight and the front bead which appears to be adjustable for windage.
[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]