Different katana tsuba (guard) shape, also different kimono (usually oden kimono only until thigh)..
Probabilities :
A) toki brought oden from different timeline, so this oden use different clothes & katana.. Plot wise oden toki suitable to be there
B) onimaru / gyukimaru, but plot wise seems will not fit.. As the attachment of gyukimaru as shimotsuki clan guardian fox & kawamatsu post shimotsuki clan lost to oden
C) kanjuro painting may still fit, maybe he was spared by kinemon so want to pay back by increase scabbard motivation from seeing oden
D) yamato will of oden, make the weakened scabbards see her as oden.. But not so fitting for yamato to say scabbards that she respect as look old
E) catarina devon, may not know oden.. Plot wise not so fun if out of nowhere blackbeard is here