Dear Jdef,
there are two Maco 64 outhere, UP 64c is very close to Efke 50, the latter version with clear base, this film was discontinued in either 2003 or 2004, TP64c is a different film with a gamma curve close to Technical Pan. In Cologne I can get TP64c at reduced price, so I think this film is going to be discontinued soon.
Maco does a "fine" job at relabelling films at a "slightly" elevated prices, stickers got to be expensive these days, you know.
Dear Edward,
please use Maco Products like their superb Lucky SHD 100, at least the can can be reused. Mr. Schroeder set a final price of 2 , while giving the retailers a hard time to get a trade price which would allow that price, like taking at least 500 films.
Just in case that someone is using Lucky try that film in combination with a staining developer like Pyrocat, that staining at least retains some highlight definition, a normal developer will not give you any chance.
Wolfram