It's a Salamence EX promos, the number is 253/XY-P and 254/XY-P
Each of the difference
Each cards is the same artwork, but they have two difference.
- In the bottome left corner, It has CoroCoro Ichiban! logo or not
- Holo or Not
253/XY-P CoroCoro Ichiban #9
253/XY-P is CoroCoro Ichiban! Magazine insert promo.
How to distinguish
- Holo
- CoroCoro Ichiban! logo
254/XY-P CoroCoro Ichiban! Pokemon Card Game XY BREAK Victory Guide
254/XY-P is CoroCoro Ichiban! Pokemon Card Game XY BREAK Victory Guide promo.
PokemonTCG guide book and 60 cards set.
254/XY-P is Non-Holo and Non-logo.
I guess Non Holo is Rare than Holo because the each of distribution amount is significantly different.
Related article
Salamence EX Promo (254/XY-P): CoroCoro Ichiban! Pokemon Card Game XY BREAK Victory Guide
Salamence EX Promo (253/XY-P): CoroCoro Ichiban! September 2016 insert