Help Identifying A 10 Ounce Poured Engelhard Bar.

You might find the information you're looking for at the All Englehard website.
Here's a link to the 10 ozt page https://allengelhard.com/10oz-test/

You can also submit the picture to Microsoft's CoPilot AI. It will return a lot of information as well.

From allengelhard.com:

Looks like 3rd series in 5-digit serial variation, occasionally seen with smooth, reflective finish as observed on the 71297 ingot pictured. Many studied examples across serial number range demonstrate small variations of font die and casting shape. We believe the wider spacing on weight and purity stampings began around 75xxx. Despite the seemingly wide serial number range, we believe these 5-digit ingots were only produced randomly in small runs and are, in fact, quite rare. The obverse of these examples measure approximately 67.56mm x 33.53mm

So, it is a better bar. I've read that rare bars are not demanding a whole lot of premium at this point ($4-$5/oz premium, but silver has been moving more than that per day). Not seeing rare bars trading, so not sure if that is true.