Magneton is card #159 of 215 in Scarlet & Violet Black Star Promos (2023), a Promo. At about $5.57 it is the #47 most valuable card in the set. It is one of 45 Magneton cards printed so far.
1 copy has been graded by players in Holobrook's grading game. None has come back a 10 yet.
POP 1 is still open for PSA, BGS and CGC: the first player to grade this card a 10 with each company gets a one-of-a-kind POP 1 slab. See the Mint
1999Base Set
2002Legendary Collection
2004Team Rocket Returns
2007Power Keepers
2013Plasma Storm
2018Ultra Prism
2022Astral Radiance
2023151

















See the full Scarlet & Violet Black Star Promos card list
An ungraded Magneton from Scarlet & Violet Black Star Promos sells for about $5.57. A PSA 10 is worth more, roughly $19.50 by our estimate, and a PSA 9 around $11.14.
It is a Promo.