I use the old Blue Magic hull as my main line 1 1/8oz trap load. I was given 3-4 thousand of these a few years ago, they last forever. One of my friends asked me what the vintage of these might be, I'm guessing R/P made these from the mid 60's to early eighties...does anyone know the heritage of these, I have old RXPs that I believe followed the Blue Magic. Any approx dates of mfger prior to STS would be appreciated...mk