LC practice: When the numbers of items in the same series are preceded by a letter or letters varying from item to item (cf. LCRI 1.6B and LCRI 1.6G), explicitly make the series added entry to omit the letter or letters from subfield $v.

in sources of different items in series: D1, C2, SW3, F4, etc.

490 1# $a __________ ; $v D1

830 #0 $a __________ ; $v 1.

LC practice: When the only information available is from the one item in hand, assume all items in that series will have the same letter(s) preceding the number until differing information is available. Record the letter(s) in subfield $v.

See also:

21.30L. Series