...and to continue the thought process:
...the problem, however, is that a clocktower on this 'residential' building would be not nostalgia per se, but kitsch.
It would be kitsch because an (analog) clocktower belongs on an institutional building. It's a symbol that says 'this institution derives its power from objective and rational sources, and that power transcends this particular location, pervading time and space throughout eternity'. It says that 'this building is just one manifestation of that power, and the activities this building contains are just particular iterations of eternal principles." ... So while there is an element of enlightenment, as I described in the previous post, there are also hints of menace, awe, and terror (in the archaic sense - the experience of trembling before an all-powerful force that you can perceive but not comprehend). Somewhat like gazing at the blazing sun, or contemplating the face of the moon - those other luminous orbs suspended in the heavens.... (The Observer in the tower at the center of Bentham's Panopticon was not concealed behind the face of a clock -if I recall correctly - , but perhaps he should have been.... )
So, with this in mind, how to make sense of where we have historically built clocktowers?
-Railroad stations ... Embassies built by the empires of rational management as they bound the wild countryside in a web of iron fetters; (corporate HQs in different industries would later adopt the symbol in the same spirit)
- Churches ... especially early modern (i.e 19th century: intellectually modern, but not architecturally Modernist) Protestant ones, punctuating their claim to demystified, transcendent piety (especially in contrast to quasi-pagan Catholic clericalism)...(and on that note, go and Google the new and otherwise awful clocktower in Mecca)
- Government Buildings ... The Customs House itself advertises incorruptible federal authority over the teaming harbor, in implicit contrast to the ancient entanglements of the local government lurking in the crooked streets above which Federal power is elegantly elevated.
To be clear, the clockface serves a functional purpose in each of these contexts as well - and far from being obsolete, it is obviously the apotheosis of graphical data display (the distinction between old and obsolete is essential and almost always overlooked).
But the symbolism matters. If there is going to be a clocktower in this 'hood, it should be at North Station, or appended to a renovated Federal Building or to the Adams Courthouse annex 'tower' (which would be a very elegant terminal vista for Hanover Street once it is reconnected to Cambridge St., by the way).
Or - to extend the theme - you could make an analogous move by locating a * non-mechanical & non-digital* time piece closer to earth at any of several nearby containers for democratic chaos ... something like a sundial or a Stonehenge-like-physical calendar to mark the 'order-embedded-in-chaos, imminent rather than abstract, effective though without authority' ethos that characterized the traditional Haymarket, or to mark the heart of the city at the core of a democratized & revitalized City Hall Plaza ....
..But none of that symbolism is appropriate on a residential building like this one. They could simply have just gone with a pitched roof and dormers like the ones on the friendly brick giants that stand shoulder to shoulder on the other side of canal street. i.e. the language of domesticity, at least in this neck of the woods - not necessarily easy to do without any condescension, but it would have been the right clothing for the occassion.