Jazz - East Europe - Live soundboard recordings top analogue quality

We have 15 hours of original live soundboard recordings made by professional sound engineers on tapes 15ips 2 track stereo. Some of the best East Euorpean jazz musicians from Bulgaria and Yugoslavia, with guests from USA, Sweden, Israel and Cuba. These are Sofia Bulgaria jazz festivals from 1988-1990, and Yugoslavian jazz festival held in Valjevo from 1988-1993. Duration of each performance is different, but we can make first copy recording each 45-50 min concert, or 2x30 minutes concert on 730m or 1000m master tapes. Notably BASF or AGFA PER528 or SM911 or similar quality.