Shelley China plate in Old Sevres pattern (not authenticated)

This is a round ceramic plate featuring printed maker's marks and design identifiers on the reverse side. The physical characteristics include an off-white or cream-colored glazed ceramic body with a metallic trim around the outer rim. The underside displays multiple green and reddish-brown transfer-printed marks. One green mark is shaped like a crest or shield and reads "SHELLEY CHINA ENGLAND". Below this, a circular crest features a landscape scene with a bird and the text "OLD SÉVRES / SHELLEY CHINA / ENGLAND / RD 648812". A handwritten number "86901" appears below the central mark in dark ink or paint. The condition appears to be moderately used, with minor surface marks and wear consistent with age, though unverified. The identification relies entirely on the visible stamps and backstamps present on the piece, which suggest a mid-20th-century or earlier English manufacture in the Shelley style, though authenticity remains unconfirmed.

Based on what I can see in the provided image, this round ceramic plate bears transfer-printed marks on the underside consistent with Shelley China in the Old Sévres pattern, including a registration number 'RD 648812'. The piece features a cream-colored glazed body and metallic trim, showing moderate surface wear consistent with age. However, I can't verify from a photo alone whether these markings are contemporary to the period or if the piece is a later reproduction or copy, as visible stamps can be forged or replicated. Physical inspection is needed to evaluate the glaze quality, paste, and wear patterns accurately. Assuming the attribution to Shelley China is correct, comparable decorative English ceramic plates of this type typically trade in the $40 to $80 range, depending on condition and collector demand in current markets. If physical examination reveals the piece to be a later reproduction, a copy, or merely made 'in the style of' the pattern rather than produced by the referenced manufacturer, the value would likely drop significantly to a nominal decorative level of $10 to $25. To establish greater certainty regarding its production and status, a physical examination by a ceramic specialist, hallmark verification, and detailed provenance documentation would be required.