Baswa
The 4 is indeed an H-101 and the serial number 20272 comes back to a 1967.The catalog says:
Walnut or Maple handle trimmed with contrasting hardwood,dark brown glass,front and back.$89.50
All Rosewood handle section $110
We believe this is the finest hunting bow ever made.Designed as a companion bow to the target model 101.It has the speed of a flight bow,and the smoothness and stability found in the finest target model.If you are a man who demands the very best in his hunting equipment,this is the bow for you.
Recommended string height measured from the string to the deepest part of the handle
7 1/4"- 8"
Value? These old bows are only worth what somebody is willing to pay for them.The condition is one big factor you must consider.
Hope this helps.
Regards,Ray