This is a very rare sought after spring compressor. It does appear to have one of the original wing nut and screw replaced.
eBay
66784 Stud Mount Valve Spring Compressor for Engine 3/8" & 7/16" Rocker Studs, Facilitate Install Valve Springs and Retainers, Fast Compress Valve Spring Tool Fitment 66784 valve spring compressor tool universally fits for removing and Installing valve coil springs for all 3/8 and 7/16 thread engine valve rockers. Available to switch between 3/8 or 7/16 thread stud head by adjusting a c-clip Lever Press down 66784 valve spring compressor consisted of two parts: a 6-inch steel leverage head and a 12-inch metal bar with a smooth rubber handle. These two parts are detachable, and designed to provide enough leverage pressure to compress the valve spring Function .
eBay
Features: 1. Fitment : Used this tool to compress the valve springs fit for Ford 3V 4.6L and 5.4L engines. 2. High Quality : Built to last, made from steel that is hardened for strength and durability. 3. Perfect Design : Used it to compress the valve springs to get the rocker arms out. It is perfect to fit for Ford 3V 4.6L or 5.4L engine. 4. Safe to Use : The RBS 303-1039 has been rigorously tested to achieve complete customer safety when using the RBS International Automotive product line. .
eBay
Specification Color: Black + Red Material: Forged Steel Tool Box Material: Plastic Process: Blackening, Blow Molding Assembly Required: Yes Operation Type: Manual Valve Spring Compressor Adapters Outer Diameter: 24.75mm/0.97in, 27.5mm/1.08in, 30.25mm/1.19in, 35.50mm/1.4in Tool Box Size: 38 * 6 * 24cm/14.96 * 2.36 * 9.45in Package Size: 39 * 26 * 7cm/15.35 * 10.24 * 2.76in Gross Weight: 2.6kg/5.73lbs.
eBay
For 91-93 Lincoln Town Car 190 hp 2V. For 02-on Ford Crown Victoria Police Interceptor 2V. For 96-04 Mustang GTs 2V. For 94-97 Lincoln Town 2V. For 94-95 Ford Thunderbird 205 hp 2V. For 96-97 Ford Thunderbird 2V.
eBay
Valve Spring Compressor Adapters: 24.75mm (O.D.), 27.50mm (O.D.), 30.25mm (O.D.) & 35.50mm (O.D.). 4 Pcs Valve Spring Compressor Adapters: 24.75mm (O.D.), 27.50mm (O.D.), 30.25mm (O.D.) & 35.50mm (O.D.).
eBay
Effortless Operation: Simplifies valve spring removal and installation without the need for cylinder head disassembly. Valve spring tools 1 set. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
eBay
Push-Down Design: Enables valve seal removal without disassembly for efficient automotive repairs. Disassembly pliers 1. Versatile Application: Suitable for multiple valve spring and seal removal tasks in automotive maintenance.
eBay