Every age of comics has special 1st appearances. The 70s and early 80s are no exception as you can see below.

Fantastic Four 142 January1974 CGC 70 1st appearance Darkoth
Fantastic Four 142 January1974 CGC 70 1st appearance Darkoth
$56.00
Time Remaining: 36m
SKULL the SLAYER 1 Origin  1st Appearance Boarded Bagged 1975 UNGRADED
SKULL the SLAYER 1 Origin 1st Appearance Boarded Bagged 1975 UNGRADED
$19.49
Time Remaining: 43m
Buy It Now for only: $19.49
Action DC Comics Silver Age Classics 252 1st Appearance Supergirl NM 94
Action DC Comics Silver Age Classics 252 1st Appearance Supergirl NM 94
$2.99
Time Remaining: 46m
Buy It Now for only: $2.99
Iron Man 33 January 1971 CGC 85 1st appearance of the Spymaster
Iron Man 33 January 1971 CGC 85 1st appearance of the Spymaster
$68.00
Time Remaining: 1h 8m
SPECTACULAR SPIDER MAN 25 NM  1st Appearance of Carrion I
SPECTACULAR SPIDER MAN 25 NM 1st Appearance of Carrion I
$35.00
Time Remaining: 1h 16m
Buy It Now for only: $35.00
Moon Knight 25 1982 Marvel 1st appearance Black Spectre Bill Sienkiewicz rare
Moon Knight 25 1982 Marvel 1st appearance Black Spectre Bill Sienkiewicz rare
$31.05 (9 Bids)
Time Remaining: 1h 24m
MOON KNIGHT 1 vol 1 high grade ORIGIN ISSUE 1st appearance BUSHMAN comic book
MOON KNIGHT 1 vol 1 high grade ORIGIN ISSUE 1st appearance BUSHMAN comic book
$20.25 (5 Bids)
Time Remaining: 1h 29m
DC Comics RAGMAN 1 1976 ORIGIN  1st APPEARANCE of RAGMAN TV ARROW RARE
DC Comics RAGMAN 1 1976 ORIGIN 1st APPEARANCE of RAGMAN TV ARROW RARE
$14.99
Time Remaining: 1h 33m
Devil Dinosaur 1 1st appearance Moon Boy Marvel Comics 1978 Jack Kirby
Devil Dinosaur 1 1st appearance Moon Boy Marvel Comics 1978 Jack Kirby
$29.99
Time Remaining: 1h 39m
Buy It Now for only: $29.99
ALL STAR COMICS 58 CGC 85 1ST APPEARANCE OF POWERGIRL
ALL STAR COMICS 58 CGC 85 1ST APPEARANCE OF POWERGIRL
$124.99
Time Remaining: 1h 44m
Shanna The She Devil 1 Near Mint Minus NM  1st Appearance
Shanna The She Devil 1 Near Mint Minus NM 1st Appearance
$60.00 (15 Bids)
Time Remaining: 1h 51m
96 CGC Action Comics 835 1st appearance Livewire John Byrne Gail Simone HOT
96 CGC Action Comics 835 1st appearance Livewire John Byrne Gail Simone HOT
$49.95
Time Remaining: 1h 54m
Buy It Now for only: $49.95
Daredevil 131 Origin  1st Appearance of New Bullseye CGC Grade 94 1976
Daredevil 131 Origin 1st Appearance of New Bullseye CGC Grade 94 1976
$415.00
Time Remaining: 1h 57m
Buy It Now for only: $415.00
INCREDIBLE HULK 212 1ST APPEARANCE CONSTRICTOR 1977 MEDIUM GRADE CRISP COLORS
INCREDIBLE HULK 212 1ST APPEARANCE CONSTRICTOR 1977 MEDIUM GRADE CRISP COLORS
$24.99
Time Remaining: 1h 59m
Buy It Now for only: $24.99
Flash 304 NM 92 1981 KEY 1st Appearance Origin of COLONEL COMPUTRON
Flash 304 NM 92 1981 KEY 1st Appearance Origin of COLONEL COMPUTRON
$7.58
Time Remaining: 2h 1m
Buy It Now for only: $7.58
SHAZAM 1 1973 1st appearance Captain Marvel since Golden Age VF DC Comic
SHAZAM 1 1973 1st appearance Captain Marvel since Golden Age VF DC Comic
$49.95
Time Remaining: 2h 11m
Buy It Now for only: $49.95
House of Secrets 92 DC 1971 VG++ 1st Appearance Swamp Thing
House of Secrets 92 DC 1971 VG++ 1st Appearance Swamp Thing
$1,588.00
Time Remaining: 2h 42m
Buy It Now for only: $1,588.00
Ghost Rider 20 1976 1st Series Daredevil appearance
Ghost Rider 20 1976 1st Series Daredevil appearance
$2.00
Time Remaining: 2h 44m
Buy It Now for only: $15.00
The Savage She Hulk 1980 Marvel 1st Appearance of She Hulk W Skybox Card
The Savage She Hulk 1980 Marvel 1st Appearance of She Hulk W Skybox Card
$70.00
Time Remaining: 2h 49m
All Star Wester 10 Jonah Hex 1st Appearance CGC 85 Very Fine+
All Star Wester 10 Jonah Hex 1st Appearance CGC 85 Very Fine+
$209.99
Time Remaining: 2h 58m
Buy It Now for only: $209.99
KEY 1976 Marvel ADAM WARLOCK 13 STAR THIEF 1st Appearance STARLIN BELOW GUIDE
KEY 1976 Marvel ADAM WARLOCK 13 STAR THIEF 1st Appearance STARLIN BELOW GUIDE
$10.00
Time Remaining: 3h 6m
Buy It Now for only: $10.00
The Amazing Spider man 209 1st Appearance  Origin of Calypso
The Amazing Spider man 209 1st Appearance Origin of Calypso
$7.99
Time Remaining: 3h 35m
Buy It Now for only: $7.99
Avengers 158 VG 1st Appearance of Graviton
Avengers 158 VG 1st Appearance of Graviton
$6.99
Time Remaining: 3h 38m
Buy It Now for only: $6.99
CAPTAIN AMERICA 134 Feb 1971 Good ++ Comic 1st Stone Face Appearance
CAPTAIN AMERICA 134 Feb 1971 Good ++ Comic 1st Stone Face Appearance
$16.00
Time Remaining: 4h
Buy It Now for only: $16.00
MARVEL PREMIERE LEGION OF MONSTERS 28 BRONZE AGE COMIC BOOK 1st APPEARANCE
MARVEL PREMIERE LEGION OF MONSTERS 28 BRONZE AGE COMIC BOOK 1st APPEARANCE
$21.59 (7 Bids)
Time Remaining: 4h 3m
Shazam 1 1st Modern Appearance of Captain Marvel in DC universe
Shazam 1 1st Modern Appearance of Captain Marvel in DC universe
$29.99
Time Remaining: 4h 28m
MARVEL COMICS CAPTAIN AMERICA 208 1st appearance of Arnim Zola 1977
MARVEL COMICS CAPTAIN AMERICA 208 1st appearance of Arnim Zola 1977
$10.00
Time Remaining: 4h 30m
Buy It Now for only: $10.00
Iron Man 118 January 1979 1st appearance Jim Rhodes
Iron Man 118 January 1979 1st appearance Jim Rhodes
$35.00
Time Remaining: 4h 37m
Buy It Now for only: $35.00
Amazing Spider Man 101 Marvel Comics 1st Appearance Morbius CGC 60 Nuff Said
Amazing Spider Man 101 Marvel Comics 1st Appearance Morbius CGC 60 Nuff Said
$650.00
Time Remaining: 4h 42m
Buy It Now for only: $650.00
KEY COMIC New Gods 7 1st appearanceall the New Gods together Steppenwolfl
KEY COMIC New Gods 7 1st appearanceall the New Gods together Steppenwolfl
$173.00
Time Remaining: 4h 43m
1st Issue Special 1 April 1975 VF 1st appearance Atlas Jack Kirby art
1st Issue Special 1 April 1975 VF 1st appearance Atlas Jack Kirby art
$4.99
Time Remaining: 4h 44m
Howard the Duck 9 February 1977 Fine 1st Appearance Preston Dudley RCMP
Howard the Duck 9 February 1977 Fine 1st Appearance Preston Dudley RCMP
$1.99
Time Remaining: 4h 53m
Avengers 112 FN VF 1st Appearance of Mantis
Avengers 112 FN VF 1st Appearance of Mantis
$54.99
Time Remaining: 4h 57m
Buy It Now for only: $54.99
Ms Marvel 9 September 1977 VF KEY 1st Deathbird appearance
Ms Marvel 9 September 1977 VF KEY 1st Deathbird appearance
$29.99
Time Remaining: 5h 6m
JUSTICE LEAGUE OF AMERICA 1971 94 1ST APPEARANCE MERLIN STARMAN ADVENTURE 61
JUSTICE LEAGUE OF AMERICA 1971 94 1ST APPEARANCE MERLIN STARMAN ADVENTURE 61
$80.00
Time Remaining: 5h 30m
Buy It Now for only: $80.00
MARVEL COMICS AVENGERS 124 1st full appearance of Star Stalker 1974
MARVEL COMICS AVENGERS 124 1st full appearance of Star Stalker 1974
$7.00
Time Remaining: 5h 39m
Buy It Now for only: $7.00
Omega Men 3 1983 CGC Graded 96 1st Appearance of Lobo DC Comics
Omega Men 3 1983 CGC Graded 96 1st Appearance of Lobo DC Comics
$76.00 (5 Bids)
Time Remaining: 5h 43m
New Teen Titans 2  1 1st Appearance of Deathstroke CGC 85  96 Lot of 2
New Teen Titans 2 1 1st Appearance of Deathstroke CGC 85 96 Lot of 2
$449.99
Time Remaining: 5h 49m
Buy It Now for only: $449.99
MARVEL COMICS THOR 191 1st appearance of Durok the Demolisher 1971
MARVEL COMICS THOR 191 1st appearance of Durok the Demolisher 1971
$4.00
Time Remaining: 5h 50m
Buy It Now for only: $4.00
AMAZING SPIDERMAN 129 1st Appearance PUNISHER CGC 50 VG FN Very Good Fine 1974
AMAZING SPIDERMAN 129 1st Appearance PUNISHER CGC 50 VG FN Very Good Fine 1974
$800.00
Time Remaining: 5h 53m
Buy It Now for only: $800.00