CG76904 | Wasting assets: clocks and watches
From HM Revenue & Customs · Capital Gains Manual
TCGA92/S44 and TCGA92/S45
Antique clocks and watches, such as `Tompion’ clocks, are regarded as machinery for the purposes of TCGA92. As such, they are deemed to have a predictable life which does not exceed fifty years and are treated as wasting assets. A disposal of such an asset will only give rise to a chargeable gain if it had been used for business purposes and Capital Allowances were, or could have been, claimed, see CG15400+.