I think this is the first bloom ever on the White Gold cherry.
This is a variety I planted as an experiment a few years ago, because it is a lesser known variety that is supposed to be self-fruitful,* and has some ‘Stella’ parentage. Stella always blooms well here (though fruit is another matter–our damp and gloomy late spring season is not cherry-friendly).
The tree looks like it may have more blooms yet to come. Meanwhile, the Stella and Royal Rainier (another somewhat reliable bloomer) are both near their peak blooms. There is also one bloom each on Bing and Craig’s Crimson, but these (not self-fruiful) varieties have fooled me before with their few flowers.
* For some reason some self-fruitful cherries seem to be able to set fruit in mild climates like ours, whereas those that need cross-pollination seem to need more chill as well.