443/493 present
50 missing:

020 - Raticate
057 - Primeape
067 - Machoke
068 - Machamp
074 - Geodude
075 - Graveler
096 - Drowzee
097 - Hypno
107 - Hitmonchan
109 - Koffing
120 - Staryu
139 - Omastar
143 - Snorlax
159 - Croconaw
204 - Pineco
206 - Dunsparce
210 - Granbull
211 - Qwilfish
240 - Magby
247 - Pupitar
288 - Vigoroth
289 - Slaking
296 - Makuhita
299 - Nosepass
307 - Meditite
317 - Swalot
318 - Carvanha
320 - Wailmer
323 - Camerupt
324 - Torkoal
326 - Grumpig
332 - Cacturne
341 - Corphish
343 - Baltoy
349 - Feebas
360 - Wynaut
367 - Huntail
369 - Relicanth
390 - Chimchar
391 - Monferno
396 - Starly
399 - Bidoof
412 - Burmy
422 - Shellos
434 - Stunky
446 - Munchlax
449 - Hippopotas
450 - Hippowdon
454 - Toxicroak
464 - Rhyperior