No, insured value has nothing to do with balance sheet value
Lets say you buy real estate (building & land) for 600,000 - that is the balance sheet value.
The building on the land costs 400,000 to rebuild if destroyed - that is the insured value.
Others have referred to jurisdiction legal requirements which are a factor if you are required to submit formal documentation to an authority but as you are a club, am assuming non-profit at that, you may not have those obligations (except to members) therefore possibly you aren’t restricted by those legal limitations, but even if you are, this doesn’t prevent the club from adopting its own internal management policies.
For example, multinational companies adopt internal management policies so that all their various country operations talk the same reporting language when communicating with head office, however for local authority reporting they make adjustments within the formal documentation to eliminate any legal requirement conflicts.
Therefore your club management (not solely the bookkeeper) could resolve to adopt an internal policy which brings these fixed assets to account within the Balance Sheet at market value.
But first, you stated that “We have some very old assets over 150 years” which implies that at some past point they (unless they were donated) could have been listed as assets of the club but due to 1) them being fully depreciated and/or 2) they weren’t deem to be of material value and/or 3) as the club account’s recording system changed - they were dropped from being recorded. The point here being, that once an asset has been recorded in the club accounts then it remains a recorded asset (albeit being of zero accounting value) until it is disposed of.
Therefore, I don’t support the notion “ignore them” just because they have “fallen” off the balance sheet over time. In fact I would go as far as saying that by not having them listed in the balance sheet (albeit being of zero accounting value) then the accounts are not of “full disclosure” as there exists assets off the balance sheet not being reported. Besides, having them listed in the balance sheet supports the club’s ownership - which maybe beneficial for any potential insurance claim.
Now getting back to the present, if the club’s management resolves to carry these assets in the balance sheet at market value (which may or may not be the insured value) then the accounting Journal entry would be:
With the Asset Revaluation account being listed under the Balance Sheet Equity section.
The management’s resolution may also cover 1) if these revaluations should be depreciated or not and at what rate* - 1% pa and 2) in what time frame will they re-valued again - 5 years.
*If the expectation is that they will continue to appreciate in value then perhaps no depreciation.
If you do have formal reporting requirements (besides members) and the above internal policy is in conflict, then at each year end - back up the accounts and then import as a separate business and delete the revaluation journal (plus any depreciation if applicable) and you will have the accounts that match the legal requirements for your jurisdiction.