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You seem to have some ElPaso (production) scopes - made well before the current Japanese-made Weaver scopes.
The reticle's called a "post & crosshair", although many post reticles were made sans the crosshair.
They were very popular amongst hunters, up to the late 1970's, when many shooters became enamored with long-range game shooting as proof of their prowess.
They're quite useful for quick shots when brush-hunting game - but they were never meant as a long-range or target reticle, and so went out of favor after then.
The thickness of the post is an aid for perception & fast optical "pick up" - when used properly the post thickness should have no bearing on target obstruction, since they should be zeroed at the tip of the post.
Most "German" reticles typically have 3 or 4 heavy posts - like a super-thick Duplex reticle.
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