I brought in 22 first edition prints (16" x 24") printed on Digital Type-C print on Kodak Endura Paper to be framed. Got them from the famed Photo Media Sdn. Bhd. in SS 2 (No. 44, 2nd Floor, Jalan SS 2/67, Petaling Jaya 47300, Selangor). They can be contacted at +603-7875 5227. Very knowledgeable bunch of people with over 30 years of experience in the family business.
I tested scribbling my initials and signature on a sketching paper before I just decided to sign (more like merely writing my name, date and edition) on the beige borders of the frame. I've wanted to sign on the back of the print but was not able to, as the print will be mounted/glued permanently onto a board to prevent warping.