I've had a rear screen rubber for a while, unused but had been badly stored, and have just found that my new HC front seal is actually HB as well. It's in perfect condition.
I'm taking them to the DSG anniversary at the Heritage centre next weekend to check against a HB, anyone interested and attending, I'm asking £40 and £55 .I had photos of the rear but physical inspection is best.
I'm actually going to Glasgow this Saturday, probably staying for a few days around Yorkshire and then to Luton so could meet up in lots of places.
Ken