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

1ST EVER APPEARANCE GROO THE WANDERER DESTROYER DUCK 1
1ST EVER APPEARANCE GROO THE WANDERER DESTROYER DUCK 1
$32.49
Time Remaining: 31m
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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: 51m
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1972 MARVEL SPOTLIGHT 5 6 7 8 9 10 11 GHOST RIDER 1ST APPEARANCE PLOOG
1972 MARVEL SPOTLIGHT 5 6 7 8 9 10 11 GHOST RIDER 1ST APPEARANCE PLOOG
$499.99
Time Remaining: 54m
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Metal Men 23 strict VF NM 90 High Grade 1st Appearance The Lizard Boca
Metal Men 23 strict VF NM 90 High Grade 1st Appearance The Lizard Boca
$80.00
Time Remaining: 2h 36m
Buy It Now for only: $80.00
Superboy 83 strict FN+ 65 High Grade 1st Appearance The Kryptonite Kid
Superboy 83 strict FN+ 65 High Grade 1st Appearance The Kryptonite Kid
$50.75
Time Remaining: 3h 35m
Buy It Now for only: $50.75
Adventure Comics 321 Superboy strict VF 80 1st Appearance The Time Trapper
Adventure Comics 321 Superboy strict VF 80 1st Appearance The Time Trapper
$61.00
Time Remaining: 6h 18m
Buy It Now for only: $61.00
THE INHUMANS 11 1ST APPEARANCE OF KORATH THE PURSUER 1977 VF NM 90
THE INHUMANS 11 1ST APPEARANCE OF KORATH THE PURSUER 1977 VF NM 90
$14.95
Time Remaining: 6h 23m
Buy It Now for only: $14.95
Metal Men 20 strict VF+ 85 High Grade 1st Appearance Dr Yes Boca
Metal Men 20 strict VF+ 85 High Grade 1st Appearance Dr Yes Boca
$71.50
Time Remaining: 6h 31m
Buy It Now for only: $71.50
AMAZING HEROES 16 1st Appearance NEW MUTANTS Marvel Graphic Novel 4 1982 VF NM
AMAZING HEROES 16 1st Appearance NEW MUTANTS Marvel Graphic Novel 4 1982 VF NM
$124.95
Time Remaining: 7h 38m
Buy It Now for only: $124.95
Avengers 112 1st Appearance Mantis Guardians of the Galaxy 2 Marvel VG Fine
Avengers 112 1st Appearance Mantis Guardians of the Galaxy 2 Marvel VG Fine
$29.99
Time Remaining: 8h 14m
POWER MAN 24 CGC 90 WHITE PAGES 1st Appearance BLACK GOLIATH RED HOT
POWER MAN 24 CGC 90 WHITE PAGES 1st Appearance BLACK GOLIATH RED HOT
$130.00
Time Remaining: 8h 39m
Buy It Now for only: $130.00
Daredevil 131 GD+ Condition 1st Appearance of Bullseye
Daredevil 131 GD+ Condition 1st Appearance of Bullseye
$56.99
Time Remaining: 8h 43m
Buy It Now for only: $56.99
Avengers 85  1st appearance of Squadron Sinister  Higher Grade  78 VF
Avengers 85 1st appearance of Squadron Sinister Higher Grade 78 VF
$79.99
Time Remaining: 8h 52m
Buy It Now for only: $79.99
Tomb of Dracula 10  1st appearance of Blade  Huge Rare Key  Higher Grade
Tomb of Dracula 10 1st appearance of Blade Huge Rare Key Higher Grade
$409.99
Time Remaining: 8h 52m
Buy It Now for only: $409.99
FURY OF FIRESTORM 7 DC Comics 1982 1st appearance of PLASTIQUE
FURY OF FIRESTORM 7 DC Comics 1982 1st appearance of PLASTIQUE
$10.00
Time Remaining: 9h 45m
Buy It Now for only: $10.00
The New Teen Titans 2 Dec 1980 DC 1st Appearance of Deathstroke FN VF
The New Teen Titans 2 Dec 1980 DC 1st Appearance of Deathstroke FN VF
$100.00
Time Remaining: 9h 47m
Batman 357 Mar 1983 DC 1st Appearance of Killer Croc and Jason Todd Robin
Batman 357 Mar 1983 DC 1st Appearance of Killer Croc and Jason Todd Robin
$120.00
Time Remaining: 9h 50m
Kamandi Last Boy On Earth 1 DC 1st Print 1st Kmandi Appearance Jack Kirby I2
Kamandi Last Boy On Earth 1 DC 1st Print 1st Kmandi Appearance Jack Kirby I2
$35.99
Time Remaining: 9h 53m
Buy It Now for only: $35.99
AVENGERS 109 HAWKEYE QUITS AVENGERS 1ST APPEARANCE CHAMPION
AVENGERS 109 HAWKEYE QUITS AVENGERS 1ST APPEARANCE CHAMPION
$19.79
Time Remaining: 10h
Buy It Now for only: $19.79
The Human Fly 1 Sep 1977 Marvel  1ST APPEARANCE 90 HIGH GRADE MARVEL
The Human Fly 1 Sep 1977 Marvel 1ST APPEARANCE 90 HIGH GRADE MARVEL
$14.99
Time Remaining: 10h 5m
Buy It Now for only: $14.99
INCREDIBLE HULK 164 CBCS 96 OW WH PAGES 1ST APPEARANCE COLONEL JOHN ARMBUSTER
INCREDIBLE HULK 164 CBCS 96 OW WH PAGES 1ST APPEARANCE COLONEL JOHN ARMBUSTER
$150.00
Time Remaining: 10h 19m
Buy It Now for only: $150.00
INCREDIBLE HULK 163 CBCS 96 OW WH PAGES 1ST APPEARANCE OF THE GREMLIN
INCREDIBLE HULK 163 CBCS 96 OW WH PAGES 1ST APPEARANCE OF THE GREMLIN
$150.00
Time Remaining: 10h 22m
Buy It Now for only: $150.00
THE Man Thing 1st series 1974 1 2nd appearance of Howard the Duck COMIC BOOK
THE Man Thing 1st series 1974 1 2nd appearance of Howard the Duck COMIC BOOK
$29.99
Time Remaining: 10h 34m
Buy It Now for only: $29.99
Amazing Spider Man 162 85 VF+ 1st Jigsaw Appearance Punisher 1976
Amazing Spider Man 162 85 VF+ 1st Jigsaw Appearance Punisher 1976
$8.50 (10 Bids)
Time Remaining: 10h 54m
INCREDIBLE HULK 131 CBCS 96 OW WH PAGES 1ST APPEARANCE OF JIM WILSON
INCREDIBLE HULK 131 CBCS 96 OW WH PAGES 1ST APPEARANCE OF JIM WILSON
$375.00
Time Remaining: 10h 55m
Buy It Now for only: $375.00
DC COMICS OMEGA MEN 3 1983 N Mint 1st LOBO APPEARANCE
DC COMICS OMEGA MEN 3 1983 N Mint 1st LOBO APPEARANCE
$38.00 (6 Bids)
Time Remaining: 10h 57m
FANTASTIC FOUR 115 Marvel CBCS 85 not CGC 1st appearance Eternals
FANTASTIC FOUR 115 Marvel CBCS 85 not CGC 1st appearance Eternals
$85.00
Time Remaining: 11h 15m
Buy It Now for only: $85.00
MICRONAUTS 8 MARVEL COMICS 1979 CGC 96 NM+ 1st APPEARANCE CAPTAIN UNIVERSE
MICRONAUTS 8 MARVEL COMICS 1979 CGC 96 NM+ 1st APPEARANCE CAPTAIN UNIVERSE
$125.00
Time Remaining: 11h 15m
Buy It Now for only: $125.00
Uncanny X Men 158 70 F VF 2nd Rogue Appearance 1st In Series App 1982
Uncanny X Men 158 70 F VF 2nd Rogue Appearance 1st In Series App 1982
$0.99 (1 Bid)
Time Remaining: 11h 15m
DOCTOR WHO MARVEL PREMIERE 57 58 60 Dr Who 1st Comic Appearance Set Of 3
DOCTOR WHO MARVEL PREMIERE 57 58 60 Dr Who 1st Comic Appearance Set Of 3
$12.50
Time Remaining: 11h 29m
Buy It Now for only: $12.50
All Star Western 10 Feb Mar 1972 DC 1st Appearance of Jonah Hex VG 40
All Star Western 10 Feb Mar 1972 DC 1st Appearance of Jonah Hex VG 40
$124.95
Time Remaining: 11h 42m
Buy It Now for only: $124.95
The Incredible Hulk 181 1st Appearance of Wolverine with Stamp
The Incredible Hulk 181 1st Appearance of Wolverine with Stamp
$600.00
Time Remaining: 11h 51m
Fantastic Four 196 July 1978 1st full appearance clone of Dr Doom
Fantastic Four 196 July 1978 1st full appearance clone of Dr Doom
$25.00
Time Remaining: 11h 51m
Buy It Now for only: $25.00
IRON MAN 54 1973 25 GD+ Condition 1st appearance MOONDRAGON
IRON MAN 54 1973 25 GD+ Condition 1st appearance MOONDRAGON
$8.99
Time Remaining: 11h 53m
Buy It Now for only: $8.99
The Amazing Spider Man 110 July 1972 1st appearance Gibbon
The Amazing Spider Man 110 July 1972 1st appearance Gibbon
$75.00
Time Remaining: 11h 58m
Buy It Now for only: $75.00
Justice League 32 1st Appearance of Brainstorm December 1964 1st Printing
Justice League 32 1st Appearance of Brainstorm December 1964 1st Printing
$45.00
Time Remaining: 12h 34m
Buy It Now for only: $45.00
Uncanny X Men 126 75 VF 1st Proteus Appearance 1979 Bronze Age
Uncanny X Men 126 75 VF 1st Proteus Appearance 1979 Bronze Age
$5.00 (4 Bids)
Time Remaining: 12h 37m
SHADE THE CHANGING MAN 1 NM 1977 1ST APPEARANCE JUSTICE LEAGUE DARK MOVIE
SHADE THE CHANGING MAN 1 NM 1977 1ST APPEARANCE JUSTICE LEAGUE DARK MOVIE
$25.00
Time Remaining: 12h 43m
Buy It Now for only: $25.00
FANTASTIC FOUR 45 ITALIAN EDITION 1972 1st APPEARANCE INHUMANS Very Good
FANTASTIC FOUR 45 ITALIAN EDITION 1972 1st APPEARANCE INHUMANS Very Good
$39.99
Time Remaining: 12h 51m
Buy It Now for only: $39.99
AVENGERS 78 CBCS 96 OW WH PAGES 1ST APPEARANCE OF THE LETHAL LEGION
AVENGERS 78 CBCS 96 OW WH PAGES 1ST APPEARANCE OF THE LETHAL LEGION
$300.00
Time Remaining: 13h 59m
Buy It Now for only: $300.00