Concerning pronunciation of the word: 'Gold'

[GrandLizard]

I find this part most charming. Thank you!

[GoesStation]

Does this represent the fading of a liquid /l/ into a /w/?

[jutfrank]

Does this represent the fading of a liquid /l/ into a /w/?

Yes, kind of.

Do you mean /w/, the approximant at the beginning of 'wind' or /ʊ/, the vowel in 'put'?

I think the latter is probably a better way to transcribe it.

The effect is a kind of 'L-vocalisation'. The following passage is from this Wiki page:

More extensive L-vocalization is a notable feature of certain dialects of English, including Cockney, Estuary English, New York English, New Zealand English, Pittsburgh, Philadelphia English and Australian English, in which an /l/ sound occurring at the end of a word (but usually not when the next word begins with a vowel and is pronounced without a pause) or before a consonant is pronounced as some sort of close back vocoid: [w], [o] or [ʊ]. The resulting sound may not always be rounded. The precise phonetic quality varies. It can be heard occasionally in the dialect of the English East Midlands, where words ending in -old can be pronounced /oʊd/. KM Petyt (1985) noted this feature in the traditional dialect of West Yorkshire but said it has died out. However, in recent decades, l-vocalization has been spreading outwards from London and the south east; John C. Wells argued that it is probable that it will become the standard pronunciation in England over the next one hundred years, which Petyt criticised in a book review.

[probus]

As a North American I must leave your question to our speakers of British English, GrandLizard.

Your English seems to be excellent, if a bit stilted and old-fashioned. Personally I find it charming.