Greetings Rick I have an article with seven different types of OK1, three flat and four scooped out reverses. The one posted by Don ought to be the one titled St?ck D with the following measures: Slightly vaulted, magnetic cross and pin. Hight: 45,2mm Width: 45,6mm Diameter medallion: 20,75mm Weight: 25,7g The one posted by you was tougher to find a perfect match to, but the closest was St?ck A. Also slightly vaulted and magnetic. The needle is in buntmetall though. Height: 45,5mm Width: 45,65mm Diameter medallion: 21,3mm Weight: 26,6g The one posted by me is similar to Don's, although I think the needle isn't quite the same. I'd like to hear your opinion on this one, hence I believe it could very possibly be a cast piece. KR Peter