Both Crosman and Daisy Air Guns made BB Guns and Rifles for Sears under the JC Higgins name. Your model 126.2831 was made by Crosman (model 180), first in 1956-59 then again in 1962-67. In Excellent Condition it is worth $130 (Like New) In 80% condition it is worth $80 In 20% condition it is worth $55
This is the code number for a "Crosman" model 180 air rifle. Both Crosman and Daisy made air Rifles for Sears under the JC Higgins name.
Crosman and Daisy made airguns for Sears under the JC Higgins name. This model is really a Crosman model 180. Crosman offers a service to locate repair parts and people who repair older models that are out of service. See the link below and click on "find a service center" at the bottom of the Crosman web page when it opens up.
The trivial answer is that any two numbers that reverse to each other will have this property. For example:19 * 91 = 91 * 19237 * 732 = 732 * 237etc.But apart from those, here are the two-digit pairs where this works:12*42 = 21*24 = 50412*63 = 21*36 = 75612*84 = 21*48 = 100813*62 = 31*26 = 80613*93 = 31*39 = 120914*82 = 41*28 = 114821*24 = 12*42 = 50421*36 = 12*63 = 75621*48 = 12*84 = 100823*64 = 32*46 = 147223*96 = 32*69 = 220824*63 = 42*36 = 151224*84 = 42*48 = 201626*31 = 62*13 = 80626*93 = 62*39 = 241828*41 = 82*14 = 114831*39 = 13*93 = 120932*46 = 23*64 = 147232*69 = 23*96 = 220834*86 = 43*68 = 292436*42 = 63*24 = 151236*84 = 63*48 = 302439*62 = 93*26 = 241842*48 = 24*84 = 201643*68 = 34*86 = 292446*96 = 64*69 = 441648*63 = 84*36 = 302464*69 = 46*96 = 4416Here are the two-digit numbers paired with three-digit numbers where this works:12*231 = 21*132 = 277212*462 = 21*264 = 554412*693 = 21*396 = 831613*341 = 31*143 = 443313*682 = 31*286 = 886614*451 = 41*154 = 631415*561 = 51*165 = 841516*671 = 61*176 = 1073617*781 = 71*187 = 1327718*891 = 81*198 = 1603821*132 = 12*231 = 277221*264 = 12*462 = 554421*396 = 12*693 = 831623*352 = 32*253 = 809624*231 = 42*132 = 554424*462 = 42*264 = 1108824*693 = 42*396 = 1663225*572 = 52*275 = 1430026*341 = 62*143 = 886626*682 = 62*286 = 1773227*792 = 72*297 = 2138428*451 = 82*154 = 1262831*143 = 13*341 = 443331*286 = 13*682 = 886632*253 = 23*352 = 809634*473 = 43*374 = 1608235*583 = 53*385 = 2040536*231 = 63*132 = 831636*462 = 63*264 = 1663236*693 = 63*396 = 2494839*341 = 93*143 = 1329939*682 = 93*286 = 2659841*154 = 14*451 = 631442*132 = 24*231 = 554442*264 = 24*462 = 1108842*396 = 24*693 = 1663243*374 = 34*473 = 1608245*594 = 54*495 = 2673046*352 = 64*253 = 1619248*231 = 84*132 = 1108848*462 = 84*264 = 2217648*693 = 84*396 = 3326451*165 = 15*561 = 841552*275 = 25*572 = 1430053*385 = 35*583 = 2040554*495 = 45*594 = 2673061*176 = 16*671 = 1073662*143 = 26*341 = 886662*286 = 26*682 = 1773263*132 = 36*231 = 831663*264 = 36*462 = 1663263*396 = 36*693 = 2494864*253 = 46*352 = 1619268*473 = 86*374 = 3216469*352 = 96*253 = 2428871*187 = 17*781 = 1327772*297 = 27*792 = 2138481*198 = 18*891 = 1603882*154 = 28*451 = 1262884*132 = 48*231 = 1108884*264 = 48*462 = 2217684*396 = 48*693 = 3326486*374 = 68*473 = 3216493*143 = 39*341 = 1329993*286 = 39*682 = 2659896*253 = 69*352 = 24288Here are the three-digit numbers where this works:102*402 = 201*204 = 41004102*603 = 201*306 = 61506102*804 = 201*408 = 82008103*602 = 301*206 = 62006103*903 = 301*309 = 93009104*802 = 401*208 = 83408112*422 = 211*224 = 47264112*633 = 211*336 = 70896112*844 = 211*448 = 94528113*622 = 311*226 = 70286113*933 = 311*339 = 105429114*822 = 411*228 = 93708122*442 = 221*244 = 53924122*663 = 221*366 = 80886122*884 = 221*488 = 107848123*642 = 321*246 = 78966123*963 = 321*369 = 118449124*842 = 421*248 = 104408132*462 = 231*264 = 60984132*693 = 231*396 = 91476133*662 = 331*266 = 88046133*993 = 331*399 = 132069134*862 = 431*268 = 115508142*482 = 241*284 = 68444143*682 = 341*286 = 97526144*882 = 441*288 = 127008201*204 = 102*402 = 41004201*306 = 102*603 = 61506201*408 = 102*804 = 82008203*604 = 302*406 = 122612203*906 = 302*609 = 183918204*603 = 402*306 = 123012204*804 = 402*408 = 164016206*301 = 602*103 = 62006206*903 = 602*309 = 186018208*401 = 802*104 = 83408211*224 = 112*422 = 47264211*336 = 112*633 = 70896211*448 = 112*844 = 94528213*624 = 312*426 = 132912213*936 = 312*639 = 199368214*824 = 412*428 = 176336221*244 = 122*442 = 53924221*366 = 122*663 = 80886221*488 = 122*884 = 107848223*644 = 322*446 = 143612223*966 = 322*669 = 215418224*633 = 422*336 = 141792224*844 = 422*448 = 189056226*311 = 622*113 = 70286226*933 = 622*339 = 210858228*411 = 822*114 = 93708231*264 = 132*462 = 60984231*396 = 132*693 = 91476233*664 = 332*466 = 154712233*996 = 332*699 = 232068234*864 = 432*468 = 202176241*284 = 142*482 = 68444243*684 = 342*486 = 166212244*663 = 442*366 = 161772244*884 = 442*488 = 215696246*321 = 642*123 = 78966246*963 = 642*369 = 236898248*421 = 842*124 = 104408264*693 = 462*396 = 182952266*331 = 662*133 = 88046266*993 = 662*399 = 264138268*431 = 862*134 = 115508286*341 = 682*143 = 97526288*441 = 882*144 = 127008301*309 = 103*903 = 93009302*406 = 203*604 = 122612302*609 = 203*906 = 183918304*806 = 403*608 = 245024306*402 = 603*204 = 123012306*804 = 603*408 = 246024309*602 = 903*206 = 186018311*339 = 113*933 = 105429312*426 = 213*624 = 132912312*639 = 213*936 = 199368314*826 = 413*628 = 259364321*369 = 123*963 = 118449322*446 = 223*644 = 143612322*669 = 223*966 = 215418324*846 = 423*648 = 274104331*399 = 133*993 = 132069332*466 = 233*664 = 154712332*699 = 233*996 = 232068334*866 = 433*668 = 289244336*422 = 633*224 = 141792336*844 = 633*448 = 283584339*622 = 933*226 = 210858342*486 = 243*684 = 166212344*886 = 443*688 = 304784366*442 = 663*244 = 161772366*884 = 663*488 = 323544369*642 = 963*246 = 236898396*462 = 693*264 = 182952399*662 = 993*266 = 264138402*408 = 204*804 = 164016403*608 = 304*806 = 245024406*906 = 604*609 = 367836408*603 = 804*306 = 246024412*428 = 214*824 = 176336413*628 = 314*826 = 259364422*448 = 224*844 = 189056423*648 = 324*846 = 274104426*936 = 624*639 = 398736432*468 = 234*864 = 202176433*668 = 334*866 = 289244442*488 = 244*884 = 215696443*688 = 344*886 = 304784446*966 = 644*669 = 430836448*633 = 844*336 = 283584466*996 = 664*699 = 464136488*663 = 884*366 = 323544604*609 = 406*906 = 367836624*639 = 426*936 = 398736644*669 = 446*966 = 430836664*699 = 466*996 = 464136