Tough question! If there is no architectural detail to them, they may not be worth a whole lot, but of course you never know–someone might need that exact style and be willing to pay a good amount. 1914 is old, but not real old, so these may not be particularly rare specimens. We used to get donated salavaged brick all the time at a place I used to work in Boston. We sold them at five cents apiece, but that may be low–we wanted to price them to move since they’re a pain to store.