Researcher is correct on the Jostam AF pad. Really hard to find a good NOS or decent used one. 7 slot pads do come up, sometimes, but the 6 slot pad (for small bores) are virtually a needle in the haystack.
I've bought NOS Hawkins heart and trestle pads off fleabay from time to time and have the heart pad on two of my Foxes now. Both pads bought off fleabay. I have also purchased a couple of NOS NoShoc pads there and I like these pads also.
I do not care for the repop pads being made and would not buy one. Just my two cents.