1998 - BROCK'S ONIX #095 - COROCORO - GLOSSY - JPN
In Japan, this card was released as an Unnumbered Promotional card with artwork by Ken Sugimori and was available on a two-card insert alongside Misty's Staryu in the March 1998 issue of CoroCoro Comic, released on February 15, 1998. It was reprinted in the Japanese Nivi City Gym Theme Deck with new artwork by the same artist. This print was later included in the Gym Heroes expansion, having been previously reprinted in the Japanese Leaders' Stadium expansion.
A mail-in prize draw offering another copy of the original Japanese print was published in the October 1998 issue of CoroCoro Comic, released on September 15, 1998. People wishing to enter the prize draw were required to affix the application ticket on the bottom left of the article page to a postcard and send it to Shogakukan. Two thousand winners were sent a set of four cards mounted on two plain sheets: Pikachu and Jigglypuff on one; Meowth and Brock's Onix on the other.
Source: https://bulbapedia.bulbagarden.net/wiki/Brock%27s_Onix_(Gym_Heroes_69)
1998 - BROCK'S ONIX #095 - COROCORO - GLOSSY - JPN
A - Near mint or better, comparable to a fresh pack
B - Excellent, very minor signs of wear
C - Lightly played, clearly visible signs of wear
D - Heavily played, moderate-to-heavy damage all over
E - Damaged, extremely worn and displays flaws all over
