Your welcome, - my thanks for doing enough pictures of the right areas.
Rarity will only take a rifle so far alone, original condition is the real holder of value, - most can recognize a condition rarity far easier than a production rarity, no book will tell you which maker-date is more elusive (how many made), but almost everyone knows that factory original-matching pre-war is rare, or can identify a cool unit marking.
Not many collect rifles by year either, at least throughout a production run as long as some of the Gewehr98's were made, it would take like 75 rifles to fill just the pre-war makers by maker-date every year known... another 42 if you include the war years!
Still, not too many can say they have a Erfurt/04 and none known seem as nice as yours is, - Wolfgang sent me pictures of one a couple years back, stock isn't period, has some issues, think it was a eGun rifle he wrangled pictures of, it isn't as nice as yours. Of the others they are trainwrecks, one an Empire Arms sale, sportered disaster, another has been shortened and is a little comical in the stock it rests in, and of course there are some vague reports from the KCN, two of which are also "h" blocks, one before yours and another after.
Anyway, I really doubt many were made, but it was probably about 10k by known serial ranges, the last 1903 known is 8717 g, the earliest 1904 known is 94 h, the highest 1904 known is 7606 h, plus there are some no-blocks and one "a" block which I think were assembled later from leftover receivers, but more acceptance trends research is needed.
