While searching on Trading Card Database looking for chicanery committed by the member iffie99 I actually ran across a pretty cool variation unknown to me that was listed by him. 1972 #216 Joe Niekro can be found with and without a black bar between the 6' and the 1" in his height, it looks like the version without the bar is the less common one but by no means rare. It reminds me of similar variation cards of Roger Metzger, Richie Zisk, and Dave Roberts in the 1979 set.

I've spent most of my time here the past 5 years in the buy/sell area. Been intending to share this for way too long. Using my time at home to focus on cards, so now is a good time to share.
Noticed this about 2 years ago while working on the set. I've been tracking this card on eBay since that time. The version with the complete black border around the Yankees logo seems to be rarer. But not that much rarer, probably 60% w/o and 40% with.
https://www.net54baseball.com/pictur...ictureid=28225https://www.net54baseball.com/pictur...ictureid=28224

Recurring blue streak in the grass on the right side.
https://img.comc.com/i/Baseball/1950...&size=original
1950 Bowman - [Base] #117 - Bill Rigney
Courtesy of COMC.com

edit: moved to PM instead to not derail topic.

is this a variation
 

Not sure this would be considered a "variation" but i always thought the 1979 fronts with 1978 backs were interesting. i am a Winfield collector so wish i had Dave on the front but oh well. I never found much info about these but there's always a few on Ebay. I have seen wrongbacks before but never different years like this.

Welcome Boo. Most do not consider wrong backs variations, and normally not as sought after. But there are wrong back collectors, usually involving major stars, and wrong year backs are a big plus I would guess. Some have posted wrong backs from non baseball issues. ( baseball on front another sport or non sport issue on back, or other way around)

If you are a Winfield guy here is an odd one

https://oi1267.photobucket.com/album...ps2b74f3b7.jpg

Thanks Al. gotcha. That is an odd one!

That 86 Topps Winfield isn’t in my top ten of screwups where I had a chance to get something on eBay and didn’t pull the trigger, but it might be #11 :D.

Yeah, topps printed some 1989 Football backs with a baseball front as well. But yours is really neat since it's from two different years.

Back in the mid eighties Baseball Card Magazine had a picture of a badly miscut 1968 Topps baseball card with the top 25% of the card being a 1967 Topps football card. That card freaked me out for about 20-25 years until I learned about Milton Bradley Win-A-Card game cards either here on eBay.