(This post was last modified: 06-13-2020, 08:37 AM by kooshman7.)
I would agree with you in terms of the size. A size 3 on the left and a size 2 on the right. The band in the middle is what makes me think the left is the Stubby model, and the right one is the Series 1 model. Also the bottom parts have a subtle but noticeable difference. I can't choose one over the other and love them both. A comparison of three Rooney size 2 brushes I have: 1/2, Stubby 2, and 2XL.
Each brush gets progressively smaller in height, and the width varies.
The 1/2 has a handle of 47.66mm, 38mm width at the Rooney label, and 53.4mm loft.
The Stubby 2 has a handle of 47mm, 37.79mm at the Rooney Label, and a loft of 47mm
The Stubby 2XL has a handle of 44.71mm, 38.16mm wide at the Rooney label, and a loft of 49.96mm.
While not huge number differences, you can see they do make a difference when lined up to each other with the Stubby looking the narrowest of the lot and a bit shorter.
Thanks for sharing a picture of the two of them pc4406! They're beautiful shaving brushes!