Found this thread from 2004 it has inductance and some other information.
http://recording.org/diy-pro-audio-forum/40918-transformer-shootout-triad-hs-29-vs.html
maybe the waybackmachine might be useful,if you know the dates you might have posted the information
CJ - can I use HS-27 instead of HS-29 in the Pultec .The HS-27 is 1:1.72 instead of 1:2 .What could be the potential issues?I have one hs-27 .There are some hs-29s available in Japan but atrocious prices :