Thank you. That all fits exactly.
There is a 'V' after the serial number. The right side of the barrel is marked ".38 S&W". The markings are hard to see,-- the gun has a lot of use wear.
This revolver belongs to a friend who bought it used about 25-30 years ago for $25. He has put quite a bit of .38 Special ammo through it without a problem and now keeps it as a home defense gun (and loads 5, old habit). I was just intrigued by the Cogswell and Harrison stamp, but now it makes sense.