Actually, I do not believe that the G-Date P08s were ever stamped on the right receiver with an Eagle 154 acceptance mark. Rather, in additon to B-90, S-91, S-92, one will find a W-154 stamp. E-211 and,on late G-dates, DE-63 will found on the pistols. I have seen magazines with the all of the above acceptance stamps but do not believe that I have ever seen a magazine stamped as Jan's with that type of eagle and 154.
For what ever relevance it might have, I have a G-Date C suffix stamped W-153, S-92. It has a nickled aluminum base mag stamped 3242 f + DE63, which is proper for a late G-Date, however, I need a W-154 for my pistol. So if anybody out there . . . .