x = 28, y = 19
oo24boo$oo24boo$18boo$17bobbo$18boo$$13b3o$13bobo$13b3o$13boo$12b3o$
12bobo$12b3o$$8boo$7bobbo$8boo$oo24boo$oo24boo!

This oscillator was found in Aug 1994.  The engine was discovered by
Achim Flammenkamp using a toroidal search program.  Dean Hickerson
found a way to make it finite.  David I. Bell found the solution shown
using blocks.