I am a fully licensed supplier.ESCAPE FROM THE LOST WORLD -SOUND SET (4 chips)SKU: SND-ELOSTC$48.00PriceQuantityAdd to CartBALLY ROMSSET OF 4 (U11/U12/U13/U14) TECH SPECS1988 Bally "Escape From the Lost World" Chip Size Checksum Notes U2 27128 C7FF 12-21-87 U3 27128 14FF 12-21-87 U2 27128 C6FF German (Bally Wulff) U3 27128 20FF German (Bally Wulff) U11 27512 6F7E 1-6-88 U12 27512 197F 1-6-88 U13 27512 D7C0 1-6-88 U14 27512 CC50 1-6-88 ROM REMOVAL & INSTALLATION INSTRUCTIONS https://www.pinballrom.com/_files/ugd/0a3635_1f0af8ba09644eb78d30e50f112cf374.pdfWILLIAMS SOFTWARE LICENSE https://www.pinballrom.com/_files/ugd/0a3635_523e61bbc4f04fb5985c60266a76c1e2.pdf