Trailing 3 year average tin price calculations=> valuation/share4 Jan 2022 12:00
SW'er
I took a look as you suggested. I used the 5 year version of the chart found on
https://tradingeconomics.com/commodity/tin
The average price in 2019 appears to have been around $18,600, the average in 2020 appears to be around $17,000 a tonne and in 2021 around $30,500. Giving a 3 year average of around $22k.
So in a year's time, if we assumed the tin price stays around $40k/tonne, swapping out $18,600 of 2019 for $40,000 in 2022 would raise the average by $7.1k, to around $29k,
and in two year's time swapping out $17,000 of 2020 for $40,000 of 2023 would raise the average again by $7.7k from $29k to around $36.7k.
The PEA sensitivity suggests a 10% rise in the tin price is worth $57.6m on the NPV, so going from the PEA price of $22k to the then 3 year average of $36.7K would be a 67% rise worth an additional $385m, taking the total up from $130m to $515m.
Whilst most investors here might think there was some upside potential in the tin price over the next few years rather than a constant $40k price, they might also think the discount rate used in the NPV calculation should be higher. But sticking with $515m, with perhaps 380m shares in issue, ( allowing for an extra 100m shares at 25p to fund dewatering and FS to add to the current 280m shares), the valuation for SC alone - on just the 2017 resources - would be $1.355 per share,(515m/380m) or as you say £1. My belief is that there are considerably more resources to be found, and validated, as was indeed achieved in 2020, so I think there is considerable upside from £1 a share, not only from SC but from other prospects.
It seems to me, that prospect will make a fund raise at 25p very attractive, and underwrite the next phase of development.