Hi Alf - Richard . I suppose we must assume at the present time that the wide date types are all Obverse R, until and if others turn up on Obv. S , but here's the thing , all 1889s also have either R and E in RE G touch or with a slight gap , ie R E G , now I have be observing which of the types are present on Obv. S or on R , I haven't been observing them long enough to make a definite statement . What I can say is that all the 16 tooth coins I have seen all have the R and E touching, and the narrowest date types have the gap, but the common 15 tooth coin has both types. Now this is where a larger pool of higher grade coins needs to observed , and compared. Also on Michael Goubys site he shows type BP 1889 B as 14 tooth , but in his book the same pictured date is listed as 13 1/2 tooth , a mistake you may say , well I have found two differing narrow dates one 13 1/2 tooth and other 14 tooth. PS Alf I've hunted high and low for that large bag of 1877 narrow date pennies I put away , but no luck , let you have a few when they turn up Terry