- Scott Catalog # : 2843 - 2847 / Mystic First Day Cover.
- Set Includes: 2843 Hudson's General / 2844 McQueen's Jupiter / 2845 Eddy's No. 242 / 2846 Ely's No. 10 and 2847 Buchanan's No. 999.
- Have description of the stamp subject printed on the back.
- ARE IN MINT, UNADDRESSED CONDITION.