I bought a longhorn heifer a few years ago, paid for her with her first calf.
Calf was out of a registered Angus bull, solid black, maybe a little white in the belly and he had scurs. Pretty decent looking calf, but I could tell he had the longhorn type in his background. He was more narrow and lighter volumed than the other all British breed calves.
No doubt the buyers if they paid attention could pick it out too.
Calf sold well for what it was and paid for the cow.
Honestly I don't see a problem with having a few of those kind of cows. If bought right. They could always be bred up to high percentage whatever breed bull one has by keeping the half blood heifers and breeding them the next generation will be 3/4 and so on. The original cows could be kept or sold.
Here calves are sorted out from a group and sold individually if they don't match up for whatever reason so it's not like they are likely going to be snuck in with a group.
Another option would be to find a few better quality cows that match up more with what you have.
We have a few oddballs too, currently have two Belted Galloways bought as cow/heifer calf pair 2 Jersey ( cow/ heifer calf pair )for nurse cows, and one Jersey cross, courtesy of neighbors Jersey bull.
Also have a Brahman x Longhorn,
No way to hide what any of them are.
The new black calf by the belted cow will likely be smaller framed and be docked.
The buyers know what they are doing and are not likely to get caught with a too bad of a deal.
If you keep her, I bet that Plummer will make a good cow for you. She will not have any problems calving, even bred to a non-CE big Simm bull. She will have plenty of milk, and will raise you a big calf. All the ones I have had were excellent mothers. Some, like an Angus, may be a little bit
too good a mother the first week or so. Those 22 I have now had Chi-Angus calves on them when I bought them, and are bred back to the same bull for February calves. I don't have or have access to a Chi-Angus bull that I like, but Scott's brother has a registered SImm bull that is solid black except for a little spot of white on his forehead, If it were a horse you would call it a star. That's what I plan to breed them back to.
I have never retained any 1/2 Corr heifers, but I don't believe in retaining heifers even if they are registered stock. Everyone I know that fools with them does what I do: Sell them all at weaning. But that Lee feller...LVR... says he crossed Corrs with red Angus, and has bred back to where he now has cows that are 15/16ths red Angus.
I have never seen or heard tell of anyone who breeds Corrs to Angus, advertising their calves as pb Angus. Never have I heard anyone, when asked, say that the calves were anything but a Corr- Angus cross. Most people are proud of these calves, and want to tell people how they get them. Around here on sale day 9 out 10 trailers pulling up will be full of commercial angus calves, so nothing to impress people with by telling folks yours are too. People just assume they are. But if you tell them they are half Corr..or half "roping cows"... they will be like:
"Wow! No sh*t?!! That's cool!! "
I can relate to your story about the half Jerseys. That's how I stumbled across this cross in the first place about 1990. I raised roping stock back then, and a neighbor's high dollar registered Black Angus escaped and got into a pasture where I had 20 Cor heifers. I guess he had been in there for a couple of weeks before I found him. I had heard about this bull getting loose, and everyone around including the owner, had figured he had been rustled. He was a good un...those 20 heifers all calved within 3 weeks of each other! I was pissed at first, but teampenning was taking off like wildfire back then. You want 30 identical looking cattle in each group for penning. and you want them polled. Criolo type cattle and Brahma type cattle can run, and they hold up well in competition , especially when it is hot. a neighbor that has an arena that they held penning practices and competitions in, saw them and bought them for what I would have gotten for roping steers.. about $550 back then. So, the next year I bred half of my Corrs to Angus. By the late 90;s team roping was waning and penning was on fire, so I would breed all the Corrs to Angus, and started contracting to provide cattle for pennings. Would use them about a year, until they got arena sour and the next crop was ready, then sell them. They brought a LOT more than roped out Corrs would. So that's the long and short on how I started this this venture.