Gold Crown 4 pockets do fit but there is a slight flaw with them 4's are recessed pockets into the casting and Gc1,2,3 are not cut for the recess but 4's will work but the top lip will slightly angled down into the pocket about a 1/16" to an 1/8" looks okay. The cheaper drop pockets sometimes sit a little high on Gc1,2 castings about an 1/8" or higher plus the rossettes fall off from the pockets, stay screwed to the casting and your pocket is loose but the rossettes are tight.
Gold Crown 4 pockets I think are around $125. soft rubber, its been awhile since I ordered some. Nockoffs hard plastic are around $60 + and there are cheaper ones