Sightless.
In order to install the Bo-mar rib, the front and rear sight must have been milled off or removed in some fashion.
First off, I would take off the Bo-Mar rib, as it adds no value to the gun. And even though you might think that the rib might improve the accuracy of the gun, it is only really a nice sight.
BHP original sight are just as accurate, especially the adjustable sight. Since the rib was installed and the original sights removed, the gun just becomes a "shooter" not a collector.
Sell the sight to a 1911 guy or a 686 guy and install a set of adjustable sights...