Lefever is one of those rare makes which has almost as many exceptions to the rule as those which follow the rule. As a rule the later the gun the more the engraving which is reversed from most makes which tend to cut cost by getting simpler as they go to save money.
I have three 20 DS and all have weep holes. Also I would bet they were all assembled near or after the Ithaca take over. Quite nice light guns but barrels tend to be thin if mine are average.
Grades were often marked but again there are exceptions. Most tend to be later guns made from parts on hand. I once passed on a H grade with one steel barrel and one Damascused barrel. Certainly an Ithaca gun. Wood was very nice and it had 32" barrels. I regret my mistake. Often the guns you pass on are more interesting than the ones you buy in hind sight.
