anyone know much about Slingerland and could help identify this snare? seller says it's a 6.5x14 from 1951 (no stamp, but he's going off what his parents said when they bought it for him in 1962). he doesn't know the model and said it was painted like that when he received it. I am looking in old catalogs and it looks like the student model, but it seems like that was only offered in 5.5x14 and 7x14. any ideas?