I have two Grado cartridges, the first one the cartridge body is marked Grado F3+, the two dots on the stylus look like they are silver. The second Grado cartridge body is marked Grado G1+, the two dots on the stylus are blue. Both came with turntables I purchased and I believe are vintage 1980s models from what I have read. I will be selling both on Barter Town and would like opinions as to what they are worth, both are in good condition. Thanks for the help, Rich.
