The State Revenue Society (SRS) catalog identifies these as Intangibles Documentary Stamps. The catalog numbers are; $0.10 - D264 Valued at $0.20 $0.25 - D266 Valued at $0.20 $0.50 - D267 Valued at $0.25 $2.50 - D269 Valued at $1.25 $5.00 - D270 Valued at $2.50 $10.00 - D270 Valued at $3.0
Missing from the series are the $0.05 - D263 $1.00 - D268
Interesting to note is that the $0.15 item is not listed for 1963 and after but is for earlier years. In addition, this series was discontinued after 1965.
30 year APS Member It's my hobby, not my investment. Life is not a race or a contest. Nor is life a journey to the grave with the intention of arriving safely in a pretty and well preserved body. Me, I will slide in broadside, thoroughly used up, totally worn out, and loudly proclaiming WOW! What a Ride!