TH350 Question-Crosley?

[BELLM]

TH350 in my roadster has no 2nd gear.  Take off in 3rd starts out first, normal, shifts to 3rd from 1st.  Smooth shift, just like a powerglide!  No slip, hesitation, nothing.  If I shift it manually 1st works fine, shift to 2nd, just like neutral, shift to 3rd is fine.  No slipping, nothing in 1st or 3rd.  Ran it up to about 80mph drives normal.  Fluid level fine, no smells or discoloration.  Tranny is a TCI, have about 5,000 miles on it since April 05.  Came with project car, was new, never ran, about 10 yrs old.  Has a TCI converter also.
Don't know how long it has been like this, haven't manually shifted it for several weeks, worked fine last time.  Car is so light I wouldn't have noticed had I not manually shifted last time I drove it.
Any ideas?  I don't have a problem overhauling it, just no good @ troubleshooting.  Don't want to do a major teardown unless I have to.  Oh yeah, running B&M trans fluid.
Thanks for any suggestions.

[Crosley.In.AZ]

My  first guess would be a broken intermediate sprag and / or race.

There should be some transfer of power in manual second gear on the shifter , unless the coasting band is burned up. If the band is burned up ,  then there would be no second gear as you report

[BELLM]

Thanks!  Quick reply.  Looks like teardown time!!