Mike, et al

He says the serial number is 668xx, which means it is not an 1899,
but rather a 1905 - no change. He also says it has the extra flat
spring, which would be correct for a 1905 - no change. This gun
should have the 5th screw in front of the trigger guard.

I just noticed the latest pictures for this gun, and it is a 5-screw,
as it should be.

I don't know why the barrel is marked that way . I'm not aware of
any military contracts for the 1905 - no change.

This is a very scarce gun - less than 10,000 total of these "no change"
guns.

Grips are readily available - small black hard-rubber would be
correct.

Mike Priwer