ADOX MCC is made acording to the latest version of Agfa MCC which was introduced to the markets in the 90ies and redesigned around 1998.
It is thus one of the most modern emulsions available.
When you make a paper you have to meet different goals. We produce MCC not primarily for long storage capability but to achieve the best photographic properties.
The storage then falls into place at a minimum of 3 years (guaranted keeping time period) with an extension of up to 8 years (total) under perfect storage conditions. I do not know of any hotographic paper today, free of banned substances, which has substantually better keeping properties at a comparable speed.