Older Dover Traditional Button (late-60s to mid-70s).

Here is an older style (1960's-1970's) Dover Traditional button that utilizes the deep profile contact block assembly with the thicker halo, spring loaded button, and acrylic contact blocks, as well as having either the black button/white halo, or the special white button/black halo, such as this one that came from the UT Austin Theater Arts Building.

But even if this was Dover's original button design that is very well made and highly coveted, the acrylic contact assemblies can be somewhat cumbersome to press when disassembled, as well as having the risk of cracking or degrading with time. As a result, that might have been the reason why Dover switched over to their newer style Traditional button in the 80's and 90's, with the polycarbonate button and brass contacts that have the weaker feeling, soft click effect. Not only that, this might have also resulted in Adams making the replicated replacement button, known as the Survivor-D, intended to replace existing Dover Traditional buttons.

But of all the Dover Traditional buttons, my favorites are this one (made from 1968 to 1975), because of its deep press and unique springy sound, as well as the Adams Survivor-D, which looks like Dover Traditional, but has a deep press, and uses a durable Adams Survivor base.

[stfplumbingelevatorsandmore]

Yeah, I much prefer this style Traditional button compared to the Boring and Cheap Feeling Late 1970's to 1990's ones. I've only seen a few Elevators with these older Traditional Buttons.