Well is not uncommon at all for there to be no Unit designation. Some units were more in to getting it on there quickly while others may not have had the time or talent to get them sewn or painted on. If I remember, the 17th flag at the Old STatehouse may be missing quite a bit of it so it could have been on there and just not on the remnant that is left. The important thing with that flag is the provenance on where it came from, who gave it and their information as given to the Old State House. I know there are some statements about some of the flags that are not correct so it all needs to be relooked. Then there are just going to be times when provenance and documentation are just not there to "prove" anything.