Parts for Rollyson Aluminum Thermopane identification of channel balance

Thanks for posting. It actually looks like you have two different kinds of balance here. The first three pictures, and the fifth picture, look like our Series 380 channel balance. The Series 380 comes with our 19-005 and 15-005 nylon fittings pre-attached.

The fourth picture shows a different balance though. While the fittings appear to be broken I think they're different. I believe this is a match for our Series 371 channel balance instead. See if you agree.

It's hard to tell what Series goes with which stamp. Your order is a little confusing but look over the two Series I recommended and see if you can work out which is best. The only way to be sure if the Series I've suggested are a match is by comparing the dimensions and style of the nylon fittings to your own.