Colt Diamondback D5520 2.5″ .38 Special Double Action Revolver, 1967 C&R

SOLD FOR: $1475

LSB#: 220420JR047

Make: Colt

Model: Diamondback Model D5520

Serial Number: D5999

Year of Manufacture: 1967 (

Caliber: .38 Special

Action Type: 6-Shot, Double Action / Single Action, Swing-Out Fluted Cylinder Revolver.

Markings: The left side of the barrel is marked “DIAMONDBACK / .38 SPECIAL CTG.”, the right is marked “COLT’S PT. F.A. MFG. CO. / HARTFORD, CONN. U.S.A.”. The left side plate has Colt’s rampant logo, the left front of the trigger guard is marked “VP” in triangle, and “H” on the rear portion. The crane and crane cut have the serial number, the cut is also marked “T”.

Barrel Length: 2 1/2’” with Full Underlug & Ventilated Rib

Sights / Optics: The front sight is a finely serrated ramp blade that is integral to the ventilated rib; the rib is matte finished for glare reduction. The rear sight is a flat top, square notched leaf in a base that is adjustable for windage and elevation pinned to the topstrap.

Stock Configuration & Condition: The grips are two-piece checkered walnut panels with gold-colored Colt logo medallions. The grips have light handling wear with a few light marks. There are no chips or cracks. The checkering is sharp. The grips have very light play to the frame. The grips rate in about Fine overall condition as possibly not original to the gun.

Type of Finish: Blue

Finish Originality: Original

Bore Condition: The bore is bright and the rifling is sharp. There is no erosion in the bore.

Overall Condition: This handgun retains about 95% of its metal finish. The finish is thinning at most edges. There are a few scattered light marks and scratches. The sideplate has a few spots of minor surface oxidation. The cylinder has a thin, faint turn-line. The screw heads are sharp. The markings are clear. Overall, this handgun rates in about Very Good-Fine condition.

Mechanics: The action functions correctly. The cylinder locks up with no play on each chamber with the trigger depressed. The double action trigger is smooth, the single action is crisp. We did not fire this handgun. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements.

Box, Paperwork & Accessories: None.

Our Assessment: The Diamondback is essentially a shorter framed Python both in the cylinder and grip frame, sharing similar aesthetic dynamics and is no less striking in appearance and mechanics than its predecessor. This revolver retains about 95% of its finish with wear consistent with light use. The grips are in about Fine condition but do have some minor play to the frame, indicating that they may not be original to the gun. The ‘positive lock’ action provides SOLID cylinder lockup, with smooth double and single action trigger pulls. Those familiar with the Python line understand the accuracy these revolvers are capable of, this one should prove to be no different. While most of Colt’s Serpent revolvers are collectible and all appear to be appreciating in value, this could still make for a nice carry revolver today, more than 50 years after it was made. Please see our pictures and good luck!

Colt Diamondback D5520 2.5" .38 Special Double Action Revolver, 1967 C&R
Colt Diamondback D5520 2.5″ .38 Special Double Action Revolver, 1967 C&R