DC 1956 Showcase #4 Variants (3) Low $7.3K Mid $25K High $142K Price Guide View on 1st appearance and origin of the second Flash, Barry Allen 1st appearance of Iris West, the wife of Barry Allen This issue is credited for ushering in the Silver Age of comics
DC 1957 Showcase #6 Low $380 Mid $1.2K High $3.5K Price Guide View on 1st team appearance and origin of the Challengers of the Unknown: Ace Morgan, Red Ryan, Prof Haley and Rocky Davis Created by Jack Kirby, this team is said to be a precursor to the development of the Fantastic Four
DC 1957 Showcase #7 Low $190 Mid $765 High $1.9K Price Guide View on 2nd team appearance of the Challengers of the Unknown 1st appearance of June Robbins, joined The Challengers 1st appearance of Ultivac, a sentient robot
DC 1957 Showcase #8 Low $1K Mid $2.3K High $10K Price Guide View on 2nd appearance of the Flash, Barry Allen
DC 1957 Showcase #9 Low $300 Mid $1.8K High $8.8K Price Guide View on First time Lois Lane featured in a title
DC 1957 Showcase #10 Low $180 Mid $620 High $2.9K Price Guide View on Second time Lois Lane is featured in a title
DC 1958 Showcase #13 Low $420 Mid $815 High $4.2K Price Guide View on 3rd appearance of the Flash, Barry Allen 1st appearance and origin Mr. Element, later becomes Dr. Alchemy
DC 1958 Showcase #14 Low $315 Mid $950 High $3.2K Price Guide View on 1st appearance of Dr. Alchemy aka Mr. Element
DC 1958 Showcase #15 Low $80 Mid $200 High $800 Price Guide View on 1st appearance of Space Ranger, Myra Mason and Cryll
DC 1958 Showcase #16 Low $80 Mid $230 High $1.4K Price Guide View on 2nd appearance of Space Ranger, Myra Mason and Cryll
DC 1958 Showcase #17 Low $600 Mid $1.8K High $8K Price Guide View on 1st appearance and origin of Adam Strange 1st appearance of Alanna, daughter of Sardath 1st appearance of Sardath, a scientist from Rann who created Zeta-Beams
DC 1959 Showcase #20 Low $110 Mid $335 High $2K Price Guide View on 1st appearance and origin of Rip Hunter 1st team appearance of the Time Masters
DC 1959 Showcase #21 Low $45 Mid $135 High $810 Price Guide View on 2nd appearance of Rip Hunter 2nd team appearance of the Time Masters
DC 1959 Showcase #22 Variants (5) Low $2.2K Mid $7K High $35K Price Guide View on 1st appearance and origin of Hal Jordan as Green Lantern 1st appearance Carol Ferris, later becomes the second Star Sapphire 1st appearance and death of Abin Sur, an alien who gave Hal his ring as he died First mention of the Green Lantern Corps [January 2023 - Hal Jordan and John Stewart will lead a new Green Lantern TV series inspired by True Detective]
DC 2024 Showcase #22 SDCC Limited: 300 Low $3 Mid $9 High $30 Price Guide View on 2024 San Diego Comic Con exclusive Foil edition
DC 1959 Showcase #23 Low $180 Mid $600 High $1.8K Price Guide View on 1st appearance of the Invisible Destroyer 2nd appearance of Green Lantern 2nd appearance of Carol Ferris
DC 1960 Showcase #24 Low $145 Mid $430 High $2.7K Price Guide View on 3rd appearance of Green Lantern 3rd appearance of Carol Ferris Green Lantern appears next in Green Lantern Vol. 2 #1
DC 1960 Showcase #27 Low $70 Mid $175 High $700 Price Guide View on 1st team appearance and origin of the Sea Devils, a group of sea-adventurers
DC 1960 Showcase #28 Low $35 Mid $105 High $570 Price Guide View on 2nd team appearance of the Sea Devils
DC 1960 Showcase #29 Low $20 Mid $100 High $325 Price Guide View on 3rd team appearance of the Sea Devils
DC 1961 Showcase #30 Low $230 Mid $615 High $3.2K Price Guide View on First solo issue featuring Aquaman throughout Origin of Aquaman retold
DC 1961 Showcase #31 Low $25 Mid $190 High $650 Price Guide View on 2nd full solo issue featuring Aquaman
DC 1961 Showcase #32 Low $35 Mid $110 High $600 Price Guide View on 1st appearance of the Creature King of the Sea aka Chimera 3rd full solo issue featuring Aquaman
DC 1961 Showcase #33 Low $65 Mid $220 High $630 Price Guide View on Final issue of Aquaman solo stories in the Showcase title, stories continue in Detective Comics
DC 1961 Showcase #34 Low $160 Mid $850 High $3.9K Price Guide View on 1st appearance and origin of The Atom aka Ray Palmer, in the Silver Age 1st appearance of Jean Loring, girlfriend of Ray Palmer
DC 1962 Showcase #37 Low $125 Mid $300 High $1.3K Price Guide View on 1st team appearance of the Metal Men: Iron, Gold, Lead, Mercury, Platinum, Tin 1st appearance of Dr. Magus
DC 1962 Showcase #38 Low $25 Mid $80 High $440 Price Guide View on 2nd team appearance of the Metal Men
DC 1962 Showcase #39 Low $40 Mid $125 High $430 Price Guide View on 3rd team appearance of Metal Men 1st appearance of Chemo, an antagonist of the Metal Men
