Welcome - Great story.
BTW Its a rarest and slightly most sought after MK1 STRAIGHT HAND. (no blob on second hand and mk1 dial is only one that the P of perpetual lines up with the L of explorer. The srl no. is correct for MK1.
Any 7836 or 78360 would look good imho from £750-£1500 and better than the 6251/62510h (ps i think yours is the US jubilee with a oval coffee bean shape link and you can easily get £400-500 for it btw, as people fit them to their 1675 gmt now 1675 jubilee gmt's back in fashion) .
Great stuff on the watch here, history, dials, bezel, straight hand etc :
https://www.watchprosite.com/rolex/t...74096.3563066/