I want to know if a 7 1/2" stainless ROA with faux ivory grips was polished bright by Ruger. It looks original to me mostly because I remember bright polished 5 1/2" and 7 1/2" stainless adjustable sight ROAs with faux ivory grips in stores back in the 1990s. The one I'm asking about has catalog number GKBPI-7 and model number 1407 on what appears to be its original brown cardboard outer shipping box. Its serial number is 145-770xx.