This could be used as a BD regrade source, with the LD mono as a base audio track. It should also show how much DNR/fake grain was done by Lowry as according to folks from AVS. Personally I find the clips staggering and darn near perfect in ways that no video transfer has ever been able to fully duplicate.
I just wish I knew the vintage of the source. I’d guess 60’s era or maybe the early 70’s but of course it had to be pre-'74 when IB was stopped in the US.