I was reading through some of the other posts and noticed a reference to bottom bracket oil ports. It's mentioned that BB oil ports stopped in 1964 and that older BB oil ports prior to 1961 were made of steel and newer ones were plastic. That being the case, I've been estimating my dates incorrectly. My Raleigh has a plastic oil port, that would make it a 1961-1963 model. Raleigh colts and Sports had plastic ports on bb during this time, but that isn't what my frame is. Let me know what you think?