1998 / 1999 - COOL PORYGON #137 - N64 / BEST COLLECTION CD - HOLO - JPN
In Japan, it was first available as an Unnumbered Promotional card as part of the Nintendo 64 Double Get Campaign. Between December 10, 1997 and January 31, 1998, customers at participating stores who purchased a Nintendo 64 were given a booklet containing Cool Porygon, Hungry Snorlax, and a set of two Food counters for use with Hungry Snorlax's attacks. Customers were also given a copy of Singing Pokémon Encyclopedia. Later Japanese versions were reprinted as one of a selection of cards included in the Pokémon Song Best Collection CD, released on January 1, 1999.
Source: https://bulbapedia.bulbagarden.net/wiki/Cool_Porygon_(Wizards_Promo_15)
1998 / 1999 - COOL PORYGON #137 - N64 / BEST COLLECTION CD - HOLO - 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
