I 'rescued' this lens when the 'users' were going all 'digital and would like to 'make my exposures' easier than the current black velvet inside-out 'sock' slipped over a film holder plenum (hand-held 'in front of the lens. Screw-in filter size is 67mm... outside diameter = 74mm.
I believe you already sent me one in 'exchange' for the Kodak Century... but it did not 'last' very long. The 'head' of small rotating "thingy" to change speeds broke off on the second use when attempting to change the exposure time. I've gone 'back' to the idea of an inside out black velvet 'sock' on a 4x5 plenum until I can afford to send the lens to Grimes to have either a shutter installed or 'something' like a Thornton Packard or Sinar Copal shutter. The alternative might be 'waiting until
I win the lottery. The pension income don't 'go' very far these days