Hi Peter
Welcome to the forum!
A list of autograph abbreviations and what they stand for can be found
here.
IRC - "International Reply Coupon." If you're sending a request to someone overseas, you send this along with your request so the person can exchange it at their post office for stamps to send something back to you. You're pre-paying the return postage.
SAE - "Self addressed envelope" This is an envelope with your address on it. You include this with your request if you're sending to someone overseas so they can send something back to you in your envelope (additionally, you send the IRC's along with the SAE so the IRC's cover the cost of having this SAE returned to you).
SASE - "Self addressed, stamped envelope" (aka SSAE - "Stamped, self addressed envelope) This is similar to a SAE except you stick stamps on the envelope (a SAE has no stamps on it.) Send this with your request if you're requesting to someone within your country.
PISP -"Personalised Inscribed Signed Photo" This means that the photo you received from the celebrity was personalised to you and inscribed with a message.
nowandagain [rockon]