Okay, I stand corrected.
I am used to the old Sesamee lock. The ones around here are black, not bronze. The name is on the front, and the rivet to hold the guts in is on the back. They must have changed the position of the rivet to the front.
The ones I have seen which need to be rekeyed, if they don't have the release in the toe of the shackle, you need to drill off the pin, and that is where I have found it over the ages.
Although IF you look at the 'new one" on that site, there is no rivet on the front. SO ???? Who knows. Just another mystery in the craft.
Sorry about that.
Sinfar