1960 Rollei camera, made slides which I would like to view but can't find the correct size format for purchasing a slide projector.
*I've converted inches to mm: 2 3/4" = 69.85mm or 70mm
*What slide projector would these sized slides fit into in order to view?
*Is this considered a medium format?
I'm beyond frustrated as our father insisted on putting our whole childhood on this size slide but no one has been able to view them since they were developed in 1963. Any information would be appreciated. Thank you