Broken original type one band vs replacement. Legit?

[USGI]

Sledge: I have (4) of the real ones and all are on carbines. It's getting late, and I just got around to taking these pics of an "upside down" U marked band on a 6 digit Inland. The others will be from another early Inland, an S'G' and a Winchester. If I don't get the rest of them tonight, I give it a try tomorrow. So far it looks like "rounded" front and back. I've got a hunch the other Inland and S'G' are both going to look just like this one. The Inland is marked UI and the S'G' is U. - Bob