That SGC is too OC for my taste but that's a personal choice. That 1954 PSA 4 Jackie looks beautiful-- hold on while I set one of my thermonuclear snipes for it...just kidding. All yours. Great card. Why pay for a 7 or 8 when raw side by side that card can hang? I dream of three dead even sized white borders on my 54s but that is realistically top notch centering for a 54. Look at the bright, clean, unblemished yellow on that background-- I better stop before I talk myself into winning it
Also, don't sweat the holder or company; buy the best looking card for the right price and if the card is accurately or under graded you can get it in whichever company slab you want later. If I see a card I want that is dead centered and legit I don't care if it is SGC or PSA. For uniformity with my Post War I usually wind up crossing down the line.