All 24 rounds are unmarked with the 4-vent breech arrangement and the "wadcutter" profile shallow pointed tip arrangement. The plain cardboard box is from Tharco of Oakland, California (known manufacturer of MBA Gyrojet pistol boxes), and includes a loose note from MB Associates regarding the wadcutter design.
Very good with some dark spots on the cartridges and some wear and hand markings on the box, including an old merchant's note listing a price of $36 for the box or $1.50 per round. Additional Information: These are late production cartridges that measure approximately 12.9 mm diameter and they have four ports on the base of the cartridge.
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