ALL: since i had my scale close and my Reed 4c needed to be moved I finally weighed it. I've always thought it was between 170-190 and it came it at 178 with a new pair of smooth KMScott jaws on it.
my Prentiss #5 surprised me that it weighed 145 pounds for a non swiveling swivel jaw vise.
ORC: i'm a fan of American Scale vises that is for certain and especially one that weighs over 150 pounds. on the vise repair 101 thread I thought there was a fairly good list of American Scale's vises and yours isn't there as you can see.
American Scale vises
No2: open screw, anvil horn, round knob, opens about 2 3/4 inches, swivel base
No3: open screw, anvil horn, round knob
No4: 4" jaw, open screw, anvil horn, round knob, swivel base
N010: 3 3/4" jaw, 5" opening, 31lbs, fixed base, round knob
No15: covered screw, round knob, might have a swivel base
No30: small vise, small anvil, horn, cylinder knob, open screw
No40: small vise w/pipe jaws, anvil, horn , open screw
No45: similar to No4
No50: open screw, swivel base, anvil/horn, 5” jaw, 40lbs
No50C (or 500): same as No50
No55: no info
No20: weird anvil vise wi/drilling hole through dyn jaw 43lbs
No5: 4" jaw, opens 5", same style as no20 34.2lbs
No?: 8” jaw with 14” opening fixed base (looks kinda like mine above without the swivel parts)
No53N: American Scale/Red Seal, fixed base (need size info)
No54: American Scale/Red Seal, 4.5" jaw, 9 3/4" opening, 9" height, fixed base
No56: American Scale/Red Seal, 6" jaw, 12" opening, fixed base
No61C: American Scale/Red Seal, 3" jaw, 35lbs, swivel base
No62C: American Scale/Red Seal, 3 1/2" jaw, 6 1/2" opening, swivel base
No64: American Scale/Red Seal, 4" jaw, 8" opening, swivel base, 11" height, , handle length 13 1/2", 79 lbs
No64: American Scale/Red Seal, 4.5" jaw, 10.25" high, 3.5" from top of jaw to screw cover, 13" length of screw cover from jaw face to end, swivel base, 75 lbs
No66: American Scale/Red Star, 6” jaw, 14” opening
No?: American Scale/Red Seal, 4” jaw,
No75H: American Scale/Red Seal, 4.5" swivel jaw, 7" opening, 3.5" depth, swivel base, 60 lbs
Red Seal 110 66: American Scale/Red Seal, 6" jaw, 24" length, 13 1/2" height, swivel base (looks like vise in post 13, but no swivel jaw)
No79: Swivel base, swivel jaw, 190lbs, 6” jaw, 11” opening (pic in post 13)
No78: same as No79, 5" jaw, opens 11", 11 5/8 H, 26" length, 120lbs
No?: fixed base, 8 1/4 jaw, 36" length, see pics here
No88(?): AM Scale / Red Seal, 8 3/8" jaw, 350lbs, 34" overall length, 16" high, handle 25 1/2" [ebay listing said it had Coaly & Co.,KC Mo on one side, but the pic shows AM SCALE CO]
No22: 3 1/2" jaw, pipe jaws, 17" length, 10" height
No23A: see above, 4.5" jaw, pipe jaws, swivel base
No25: 6" jaw, pipe jaws, 26" length, 15 1/2" height, ~200lb