CA6a California Duck Stamp 1976-77 Mint VF wavy red line

1976-77 California Duck Stamp featuring Widgeon in flight, designed by Paul B. Johnson. This $1 issue (Catalog No. CA6a) was printed on red wavy-line backing paper and is in Mint condition with full gum. It bears a very low serial number: D000004-9 - among the earliest recorded from this issue. VF Very Fine