Hi all I am selling my set of 5 very high quality English made 'True Technology' filters , these are as new condition as I have used them once , then gave up on AP .
The set includes Red , Green and Blue as well as a clear and IR block filter , they are in a small case with instructions and are of 1 1/4 inch size .
A google says they run about 150 pounds sterling ( if you can find them ) and I will let them go for $200 including post .
As said these are a very high quality set , up there with AstroDon's .
I cant post a photo just now , sorry .
edit ; forgot to mention they are threaded for standard 1 1/4inch eyepiece size .
Brian.