Spalding of that era were not "super discount" they were top line. The super discount years came later. The '1' in MTR1 indicates stiff shaft. MTR2 medium etc. I prefer the '67 MT'S with the alternate frosted and clean face lines but for '60's Mac's they need to be flame ceramic.
I found a complete set of these at goodwill. They wanted $7.99 for each club 2-11. I was not happy. Great review
Reminds me of my Mizuno MP-7 irons. Especially with the bat wing muscle back.
Spalding of that era were not "super discount" they were top line. The super discount years came later. The '1' in MTR1 indicates stiff shaft. MTR2 medium etc. I prefer the '67 MT'S with the alternate frosted and clean face lines but for '60's Mac's they need to be flame ceramic.