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

Sandman 1 1st Appearance in Bronze Age
Sandman 1 1st Appearance in Bronze Age
$15.99
Time Remaining: 31m
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DC Super Stars 16  Star Hunters 2 7 1st Appearance Star Hunters
DC Super Stars 16 Star Hunters 2 7 1st Appearance Star Hunters
$9.99
Time Remaining: 31m
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Stalker DC Comics 1 and 2 Origin and 1st Appearance
Stalker DC Comics 1 and 2 Origin and 1st Appearance
$12.99
Time Remaining: 31m
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TOR 1 1st DC Appearance NICE BOOK
TOR 1 1st DC Appearance NICE BOOK
$4.99
Time Remaining: 31m
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OMAC 1 1st Appearance of Omac NICE BOOK
OMAC 1 1st Appearance of Omac NICE BOOK
$12.99
Time Remaining: 31m
Buy It Now for only: $12.99
The New Teen Titans Annual 2 DC Comics 1983 1st Appearance Vigilante No 2
The New Teen Titans Annual 2 DC Comics 1983 1st Appearance Vigilante No 2
$59.99
Time Remaining: 34m
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SHAZAM 1 1973 CGC Graded 96 1st Appearance of Captain Marvel Movie Coming
SHAZAM 1 1973 CGC Graded 96 1st Appearance of Captain Marvel Movie Coming
$249.99
Time Remaining: 36m
Buy It Now for only: $249.99
Detective Comics 463 Batman 1st Appearance Black Spider Calculator DC 1976 VF
Detective Comics 463 Batman 1st Appearance Black Spider Calculator DC 1976 VF
$6.00
Time Remaining: 42m
SPECTACULAR SPIDER MAN 1976 1 1ST ISSUE 1ST APPEARANCE LIGHTMASTER MARVEL
SPECTACULAR SPIDER MAN 1976 1 1ST ISSUE 1ST APPEARANCE LIGHTMASTER MARVEL
$24.99
Time Remaining: 45m
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Luke Cage Hero For Hire  1 1st Appearance Luke Cage Origin
Luke Cage Hero For Hire 1 1st Appearance Luke Cage Origin
$599.87
Time Remaining: 1h 5m
Buy It Now for only: $599.87
Marvel Premiere  15 1st Appearance Iron Fist Origin
Marvel Premiere 15 1st Appearance Iron Fist Origin
$224.87
Time Remaining: 1h 9m
Buy It Now for only: $224.87
DC Comics BATMAN 232 1st Appearance Ras Al Ghul CGC 65 Neil Adams
DC Comics BATMAN 232 1st Appearance Ras Al Ghul CGC 65 Neil Adams
$449.99
Time Remaining: 1h 19m
Buy It Now for only: $449.99
Lot of 2 issues Star Wars 42 Dec 1980 Marvel 1st appearance Bobs Fett lot
Lot of 2 issues Star Wars 42 Dec 1980 Marvel 1st appearance Bobs Fett lot
$47.51 (39 Bids)
Time Remaining: 1h 32m
X Men 158 VF NM 1ST Appearance of Rogue Marvel 1982
X Men 158 VF NM 1ST Appearance of Rogue Marvel 1982
$29.99
Time Remaining: 1h 51m
Buy It Now for only: $29.99
BEOWULF 1 VF NM Collectors Item 1st Issue First Beowulf Appearance DC 1975
BEOWULF 1 VF NM Collectors Item 1st Issue First Beowulf Appearance DC 1975
$19.64
Time Remaining: 1h 58m
Buy It Now for only: $19.64
1ST EVER APPEARANCE GROO THE WANDERER DESTROYER DUCK 1
1ST EVER APPEARANCE GROO THE WANDERER DESTROYER DUCK 1
$34.99
Time Remaining: 2h 7m
Buy It Now for only: $34.99
BEOWULF 3 NM  Early DC Beowulf Appearance 1st Man Apes 1975
BEOWULF 3 NM Early DC Beowulf Appearance 1st Man Apes 1975
$14.14
Time Remaining: 2h 9m
Buy It Now for only: $14.14
Vintage Marvel Comics Uncanny X men 120 1st First App Appearance Alpha Flight
Vintage Marvel Comics Uncanny X men 120 1st First App Appearance Alpha Flight
$30.00
Time Remaining: 2h 9m
Buy It Now for only: $30.00
Fury of Firestorm 7 CGC 92 1982 1st First Plastique Appearance White Pages
Fury of Firestorm 7 CGC 92 1982 1st First Plastique Appearance White Pages
$62.99
Time Remaining: 2h 25m
Buy It Now for only: $62.99
DOCTOR STRANGE MASTER of the MYSTIC ARTS 17 FN 1st APPEARANCE STYGYRO
DOCTOR STRANGE MASTER of the MYSTIC ARTS 17 FN 1st APPEARANCE STYGYRO
$5.00
Time Remaining: 2h 27m
Buy It Now for only: $5.00
Star wars the empire strikes back 1st appearance boba fett Marvels Super Special
Star wars the empire strikes back 1st appearance boba fett Marvels Super Special
$39.95
Time Remaining: 3h 44m
Buy It Now for only: $39.95
Nova 1 1st Appearance Of Nova
Nova 1 1st Appearance Of Nova
$55.00
Time Remaining: 4h 34m
Buy It Now for only: $55.00
X Factor 5 VF NM 1st Cameo of Appearance of Apocalypse SKU15329 25 Off
X Factor 5 VF NM 1st Cameo of Appearance of Apocalypse SKU15329 25 Off
$35.99
Time Remaining: 4h 49m
Buy It Now for only: $35.99
OMEGA MEN 1st Series 1982 1 2 3 4 5 7 10 1st LOBO appearance all NM
OMEGA MEN 1st Series 1982 1 2 3 4 5 7 10 1st LOBO appearance all NM
$85.00
Time Remaining: 4h 50m
Buy It Now for only: $85.00
MARVEL MIGHTY THOR 337 340 1ST APPEARANCE OF BETA RAY BILL KEY 1983 VF NM
MARVEL MIGHTY THOR 337 340 1ST APPEARANCE OF BETA RAY BILL KEY 1983 VF NM
$149.99
Time Remaining: 4h 51m
Buy It Now for only: $149.99
ROM 1 VF+ 1st Issue Collectors Item 1st Appearance 1979 SPACEKNIGHT Marvel
ROM 1 VF+ 1st Issue Collectors Item 1st Appearance 1979 SPACEKNIGHT Marvel
$46.37
Time Remaining: 5h 19m
Buy It Now for only: $46.37
Avengers  195 CGC 98 White Marvel 1980 1st appearance Taskmaster cameo
Avengers 195 CGC 98 White Marvel 1980 1st appearance Taskmaster cameo
$195.00
Time Remaining: 5h 51m
Buy It Now for only: $195.00
Hero for Hire  1 CGC 85 White Marvel 1972 1st appearance Luke Cage Unpressed
Hero for Hire 1 CGC 85 White Marvel 1972 1st appearance Luke Cage Unpressed
$895.00
Time Remaining: 5h 57m
Buy It Now for only: $895.00
Hero for Hire  1 CGC 40 OW W Marvel 1972 1st appearance Luke Cage
Hero for Hire 1 CGC 40 OW W Marvel 1972 1st appearance Luke Cage
$195.00
Time Remaining: 6h
Buy It Now for only: $195.00
Doctor Strange 2 Aug 1974 Marvel 1st appearance of the Soul Eater
Doctor Strange 2 Aug 1974 Marvel 1st appearance of the Soul Eater
$9.99
Time Remaining: 8h 28m
Captain Marvel  5 strict VF NM 1st appearance The Metazoid
Captain Marvel 5 strict VF NM 1st appearance The Metazoid
$72.00
Time Remaining: 9h 8m
Buy It Now for only: $72.00
Captain Marvel  5 strict VG+ 1st appearance The Metazoid
Captain Marvel 5 strict VG+ 1st appearance The Metazoid
$15.75
Time Remaining: 9h 8m
Buy It Now for only: $15.75
House of Mystery  153 strict VF 1st appearance Professor Hugo
House of Mystery 153 strict VF 1st appearance Professor Hugo
$41.00
Time Remaining: 9h 10m
Buy It Now for only: $41.00
House of Mystery  153 strict FN VF+ 1st appearance Professor Hugo
House of Mystery 153 strict FN VF+ 1st appearance Professor Hugo
$35.25
Time Remaining: 9h 10m
Buy It Now for only: $35.25
Captain Marvel  56 strict NM 1st appearance Deathgrip Part II
Captain Marvel 56 strict NM 1st appearance Deathgrip Part II
$12.00
Time Remaining: 9h 10m
Buy It Now for only: $12.00
Captain Marvel  56 strict VF NM 1st appearance Deathgrip Part II
Captain Marvel 56 strict VF NM 1st appearance Deathgrip Part II
$10.00
Time Remaining: 9h 11m
Buy It Now for only: $10.00
MARVEL TWO IN ONE ANNUAL 7 KEY ISSUE 1st APPEARANCE of CHAMPION
MARVEL TWO IN ONE ANNUAL 7 KEY ISSUE 1st APPEARANCE of CHAMPION
$20.00
Time Remaining: 9h 20m
Buy It Now for only: $20.00
House of Mystery  124 strict FN 1st appearance MrDoom
House of Mystery 124 strict FN 1st appearance MrDoom
$30.00
Time Remaining: 9h 27m
Buy It Now for only: $30.00
Hands of the Dragon The  1 strict VF+ 1st appearance The Dragon
Hands of the Dragon The 1 strict VF+ 1st appearance The Dragon
$7.00
Time Remaining: 9h 36m
Buy It Now for only: $7.00
Cerebus  26 strict VF+ 1st appearance High Society
Cerebus 26 strict VF+ 1st appearance High Society
$19.00
Time Remaining: 9h 49m
Buy It Now for only: $19.00