In the history of Great Britain, a variety of things (tanks, aircraft, artillery pieces) were paid for "by subscribtion" by private donation. A civic group, for example, would raise funds by selling "subscriptions" to a large number of people and when fuinds were raised would finance the (fill in the blank) which would then typically be marked with a plaque accordingly so it could be identified by it's users in the field.
In what context were the posts referred to by the OP written?
Willie
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