The mania for collecting postage stamps. Hence Stampomaniac.

1

1865.  Morning Star, 28 Aug. A few years ago, grey-haired people, as well as little children, were seized with the stampomania.

2

1886.  Daily News, 9 Dec., 5/2. In the other branches … the collector may be eager, of course, for good things, but he can never know the passion of the stampomaniac.

3

1891.  Evening Post, 17 Nov., 4/2. Stampomania is much like any other craze.

4