Help Identifying Marks On Cylinder

[HawkSecurity]

Hi Guys. Fairly new here.
Got my set of lockpicks last week. Been trying to pick euro cylinders . I work as a Carpenter and we have a have our own intruder alarm company , so i quite often acquire miscellaneous cylinders.

Started with an E*S MP5.
Ridiculously easy to pick, I appreciate its quite a cheap one, But come on.
Next went onto a Union cylinder. Not too bad, Still fairly easy but actually requires some thought and attention.
I now have with me an Asec + Gege. Hours spent on these trying to get my head around what is going on inside these locks.
I noticed however that on the gege lock that i have,there are several marks that i have not seen or read about.

Firstly The four dimples on the front body of the lock.(Sorry not used to the terminology as yet)
And the 2 bores that are next to the 6 pins that run along the underside of the lock

Can anyone enlighten me as to what these are/mean
Much appreciated
Steve
P.S Sorry for the huge pictures. Taken on my phone

[MacGyver101]

I'm not sure about that cylinder in particular, but the two holes in your first picture might be anti-drill rods (although they're a bit far out to the side)? (They're not in the right spot to be "trap pins", check-pins, etc..)

No idea about the "dimples" in the face of the lock: to me, they look like they were made after manufacturing.

[mh]

The two holes look like they are empty, but in a more expensive version of the cylinder, hard rods could be inserted into these.
And the dimples on the face are probably damage, but have no purpose.

Cheers
mh

[dls]

The dimples are from removing or inserting the lock by tapping it in or out with the sharp end of a phillips screwdriver the holes are for drill
protection, its easier to mass produce cylinders prepared for all possible options in large batches.
The assec should be an easy pick but may have deep cut near the shoulder of the key, you could be overlifting the first pin.
Many locks have a deep cut on the first pin to make picking harder and they will often have groove in the front or the plug for the shoulder
to turn the plug rather than the key which is weakend by the deep first cut. If you see this groove then you can assume that the first pin will be a deep one

[Solomon]

The first pic shows anti drill pins, these are quite common especially in BS rated cylinders. The dimples on the face of the lock look like they've been tapped in, I have no idea why or what someone was trying to accomplish by doing that. At any rate, the reason you're having trouble picking is it that gege have serrated driver pins and countermilled pin chambers so it's difficult to tell when a pin is set correctly. Oversetting and dropping pins is very easy to do and you can find yourself going in circles, they're extremely annoying locks to pick. They're very well made and tend to have annoying bittings aswell so raking isn't even an option 90% of the time; you can't even rake them out of frustration lol. I have one here with an easy bitting and can't SPP or rake it to save my life... taken it apart and picked it adding one pin after another and I can do it easily with 4 pins but not with 5. Gege locks will leave you rocking back and forth in a corner mumbling to yourself.