Meyer Trioplan
Member
My net searches have yielded a little but nothing too comprehensive.
A few months ago, I picked up a Bulk Loader with some aged film in it. Some clip and exposure tests revealed the rebate code “EASTMAN 25” and the film seemed to rate around 0.25 ISO giving off a rather Ortho appearance.
Some net searches seemed to anecdotally suggest the suffix numbers related to the last 2 digits of the 4 digit codes found online but there was no suitable film ending in 25 to match
Today I got some Eastman Tri-X 5233 and it carries an EASTMAN 23 marking. Thinking the middle two digits might offer the clues, I looked at the online 4 digit listing and couldn’t find a suitable match either.
So after some more online digging, I’ve found a few other matches that seem to suggest these codes are almost random...
An EASTMAN 9 (in an older typeface style) printing correlates to 5360 Positive.
23 corresponding to 5233
24 corresponding to 5375
25?
26 rebate marking seen as well with no known correlating 4 digit code.
I think in my earlier searches I saw reference to other numbers in the teens.
Does anyone have an idea how to crack the codes?
A few months ago, I picked up a Bulk Loader with some aged film in it. Some clip and exposure tests revealed the rebate code “EASTMAN 25” and the film seemed to rate around 0.25 ISO giving off a rather Ortho appearance.
Some net searches seemed to anecdotally suggest the suffix numbers related to the last 2 digits of the 4 digit codes found online but there was no suitable film ending in 25 to match
Today I got some Eastman Tri-X 5233 and it carries an EASTMAN 23 marking. Thinking the middle two digits might offer the clues, I looked at the online 4 digit listing and couldn’t find a suitable match either.
So after some more online digging, I’ve found a few other matches that seem to suggest these codes are almost random...
An EASTMAN 9 (in an older typeface style) printing correlates to 5360 Positive.
23 corresponding to 5233
24 corresponding to 5375
25?
26 rebate marking seen as well with no known correlating 4 digit code.
I think in my earlier searches I saw reference to other numbers in the teens.
Does anyone have an idea how to crack the codes?
