Product review (1 stars): Exact Replacement.... but ended up being short life.
This replacement bulb is performing as per the original.  I did, however, always wish that the original was a little brighter at the maximum setting, but the max brightness is adequate, if not ideal.

Mid-July update:  The replacement bulb has now burned out after 3 months, whereas the original lasted for 6+ years with the same usage pattern.  After reading other reviews about complaints of the life of these bulbs, I will be looking to purchase a replacement elsewhere.